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Journal articles on the topic 'Quantum optics and quantum optomechanics'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Li, Lingchao, and Jian-Qi Zhang. "Force Dependent Quantum Phase Transition in the Hybrid Optomechanical System." Photonics 8, no. 12 (December 18, 2021): 588. http://dx.doi.org/10.3390/photonics8120588.

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The optomechanics shows a great potential in quantum control and precise measurement due to appropriate mechanical control. Here we theoretically study the quantum phase transition in a hybrid atom-optomechanical cavity with an external force. Our study shows, in the thermodynamic limit, the critical value of quantum phase transition between the normal phase and super-radiant phase can be controlled and modified by the external force via the tunable frequency of optomechanics, then a force dependent quantum phase transition can be achieved in our system. Moreover, this force dependent quantum phase transition can be employed to detect the external force variation. In addition, our numerical simulations illustrate the sensitivity of the external force measurement can be improved by the squeezing properties of the quantum phase transition.

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2

Wu, Ning, Kaiyu Cui, Xue Feng, Fang Liu, Wei Zhang, and Yidong Huang. "Hetero-Optomechanical Crystal Zipper Cavity for Multimode Optomechanics." Photonics 9, no. 2 (January 29, 2022): 78. http://dx.doi.org/10.3390/photonics9020078.

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Multimode optomechanics exhibiting several intriguing phenomena, such as coherent wavelength conversion, optomechanical synchronization, and mechanical entanglements, has garnered considerable research interest for realizing a new generation of information processing devices and exploring macroscopic quantum effect. In this study, we proposed and designed a hetero-optomechanical crystal (OMC) zipper cavity comprising double OMC nanobeams as a versatile platform for multimode optomechanics. Herein, the heterostructure and breathing modes with high mechanical frequency ensured the operation of the zipper cavity at the deep-sideband-resolved regime and the mechanical coherence. Consequently, the mechanical breathing mode at 5.741 GHz and optical odd mode with an intrinsic optical Q factor of 3.93 × 105 were experimentally demonstrated with an optomechanical coupling rate g0 = 0.73 MHz between them, which is comparable to state-of-the-art properties of the reported OMC. In addition, the hetero-zipper cavity structure exhibited adequate degrees of freedom for designing multiple mechanical and optical modes. Thus, the proposed cavity will provide a playground for studying multimode optomechanics in both the classical and quantum regimes.

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3

Khosla, Kiran E., George A. Brawley, Michael R. Vanner, and Warwick P. Bowen. "Quantum optomechanics beyond the quantum coherent oscillation regime." Optica 4, no. 11 (November 7, 2017): 1382. http://dx.doi.org/10.1364/optica.4.001382.

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4

Farooq, K., M. A. Khan, L. C. Wang, and X. X. Yi. "Dynamics and transmissivity of optomechanical system in squeezed environment." International Journal of Modern Physics B 29, no. 28 (October 29, 2015): 1550201. http://dx.doi.org/10.1142/s021797921550201x.

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Cavity quantum optomechanics offers the potential to explore quantum nature and characteristics in microscopic and nanoquantum systems. In this area, various experimental setup trends to explore, while theoretical approaches seek to lead the concrete bases for these amazing characteristics. In this paper, we present the dynamic features, stabilization and the optical response (transmission) properties of an optomechanical system in the squeezed environment theoretically. Particularly, we calculate optical intensity transmission coefficient of the optomechanical system. The optomechanical system has driven coherently with the external laser field.

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5

Xu, Xunwei, Yanjun Zhao, Hui Wang, Hui Jing, and Aixi Chen. "Quantum nonreciprocality in quadratic optomechanics." Photonics Research 8, no. 2 (January 22, 2020): 143. http://dx.doi.org/10.1364/prj.8.000143.

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6

Shahandeh, Farid, and Martin Ringbauer. "Optomechanical state reconstruction and nonclassicality verification beyond the resolved-sideband regime." Quantum 3 (February 25, 2019): 125. http://dx.doi.org/10.22331/q-2019-02-25-125.

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Quantum optomechanics uses optical means to generate and manipulate quantum states of motion of mechanical resonators. This provides an intriguing platform for the study of fundamental physics and the development of novel quantum devices. Yet, the challenge of reconstructing and verifying the quantum state of mechanical systems has remained a major roadblock in the field. Here, we present a novel approach that allows for tomographic reconstruction of the quantum state of a mechanical system without the need for extremely high quality optical cavities. We show that, without relying on the usual state transfer presumption between light an mechanics, the full optomechanical Hamiltonian can be exploited to imprint mechanical tomograms on a strong optical coherent pulse, which can then be read out using well-established techniques. Furthermore, with only a small number of measurements, our method can be used to witness nonclassical features of mechanical systems without requiring full tomography. By relaxing the experimental requirements, our technique thus opens a feasible route towards verifying the quantum state of mechanical resonators and their nonclassical behaviour in a wide range of optomechanical systems.

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7

Farooq, K., H. M. Noor ul Huda Khan Asghar, M. A. Khan, and Khalil Khan. "Transmissivity of optomechanical system containing a two-level system." International Journal of Modern Physics B 33, no. 22 (September 10, 2019): 1950252. http://dx.doi.org/10.1142/s0217979219502527.

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The field of quantum optomechanics is newly grooming research field, availed good attention in the last couple of years. Here, we theoretically study the system of optomechanics containing a two-level atom, which is coupled to the cavity field, and driven coherently by external fields. Analytical results for the system’s operator dynamics, steady state solutions and transmissivity of optomechanical system are calculated. Transmission (optical response) from the optomechanical system shows some useful information about the current optomechanical system. Particularly, [Formula: see text] = [Formula: see text]-g0([Formula: see text] + [Formula: see text]) is a crucial quantity in optomechanics, focused as main parameters in this paper. Optical transmission is studied in two regions. The first region (case) (i) when [Formula: see text] = [Formula: see text] - [Formula: see text], and in second region (case), (ii) [Formula: see text] = [Formula: see text] + [Formula: see text]. The transmission is examined and discussed with respect to the mechanical frequency of the oscillating mirror.

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8

Ventura-Velázquez, C., B. M. Rodríguez-Lara, and H. M. Moya-Cessa. "Operator approach to quantum optomechanics." Physica Scripta 90, no. 6 (May 13, 2015): 068010. http://dx.doi.org/10.1088/0031-8949/90/6/068010.

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9

Rodríguez-Lara, B. M., and H. M. Moya-Cessa. "An optical analog of quantum optomechanics." Physica Scripta 90, no. 7 (June 1, 2015): 074004. http://dx.doi.org/10.1088/0031-8949/90/7/074004.

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10

Lahlou, Y., M. Amazioug, J. El Qars, N. Habiballah, M. Daoud, and M. Nassik. "Quantum coherence versus nonclassical correlations in optomechanics." International Journal of Modern Physics B 33, no. 29 (November 20, 2019): 1950343. http://dx.doi.org/10.1142/s0217979219503430.

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Coherence arises from the superposition principle, where it plays a central role in quantum mechanics. In Phys. Rev. Lett. 114, 210401 (2015), it has been shown that the freezing phenomenon of quantum correlations beyond entanglement is intimately related to the freezing of quantum coherence (QC). In this paper, we compare the behavior of entanglement and quantum discord with quantum coherence in two different subsystems (optical and mechanical). We use respectively the entanglement of formation (EoF) and the Gaussian quantum discord (GQD) to quantify entanglement and quantum discord. Under thermal noise and optomechanical coupling effects, we show that EoF, GQD and QC behave in the same way. Remarkably, when entanglement vanishes, GQD and QC remain almost unaffected by thermal noise, keeping nonzero values even for high-temperature, which is in concordance with Phys. Rev. Lett. 114, 210401 (2015). Also, we find that the coherence associated with the optical subsystem is more robust — against thermal noise — than those of the mechanical subsystem. Our results confirm that optomechanical cavities constitute a powerful resource of QC.

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11

Wang, Hongfei, Xiujuan Zhang, Jinguo Hua, Dangyuan Lei, Minghui Lu, and Yanfeng Chen. "Topological physics of non-Hermitian optics and photonics: a review." Journal of Optics 23, no. 12 (October 25, 2021): 123001. http://dx.doi.org/10.1088/2040-8986/ac2e15.

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Abstract The notion of non-Hermitian optics and photonics rooted in quantum mechanics and photonic systems has recently attracted considerable attention ushering in tremendous progress on theoretical foundations and photonic applications, benefiting from the flexibility of photonic platforms. In this review, we first introduce the non-Hermitian topological physics from the symmetry of matrices and complex energy spectra to the characteristics of Jordan normal forms, exceptional points, biorthogonal eigenvectors, Bloch/non-Bloch band theories, topological invariants and topological classifications. We further review diverse non-Hermitian system branches ranging from classical optics, quantum photonics to disordered systems, nonlinear dynamics and optomechanics according to various physical equivalences and experimental implementations. In particular, we include cold atoms in optical lattices in quantum photonics due to their operability at quantum regimes. Finally, we summarize recent progress and limitations in this emerging field, giving an outlook on possible future research directions in theoretical frameworks and engineering aspects.

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12

Wu, Xiaoqin, and Limin Tong. "Optical microfibers and nanofibers." Nanophotonics 2, no. 5-6 (December 16, 2013): 407–28. http://dx.doi.org/10.1515/nanoph-2013-0033.

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AbstractAs a combination of fiber optics and nanotechnology, optical microfibers and nanofibers (MNFs) have been emerging as a novel platform for exploring fiber-optic technology on the micro/nanoscale. Typically, MNFs taper drawn from glass optical fibers or bulk glasses show excellent surface smoothness, high homogeneity in diameter and integrity, which bestows these tiny optical fibers with low waveguiding losses and outstanding mechanical properties. Benefitting from their wavelength- or sub-wavelength-scale transverse dimensions, waveguiding MNFs exhibit a number of interesting properties, including tight optical confinement, strong evanescent fields, evident surface field enhancement and large and abnormal waveguide dispersion, which makes them ideal nanowaveguides for coherently manipulating light, and connecting fiber optics with near-field optics, nonlinear optics, plasmonics, quantum optics and optomechanics on the wavelength- or sub-wavelength scale. Based on optical MNFs, a variety of technological applications, ranging from passive micro-couplers and resonators, to active devices such as lasers and optical sensors, have been reported in recent years. This review is intended to provide an up-to-date introduction to the fabrication, characterization and applications of optical MNFs, with emphasis on recent progress in our research group. Starting from a brief introduction of fabrication techniques for physical drawing glass MNFs in Section 2, we summarize MNF optics including waveguiding modes, evanescent coupling, and bending loss of MNFs in Section 3. In Section 4, starting from a “MNF tree” that summarizes the applications of MNFs into 5 categories (waveguide & near field optics, nonlinear optics, plasmonics, quantum & atom optics, optomechanics), we go to details of typical technological applications of MNFs, including optical couplers, interferometers, gratings, resonators, lasers and sensors. Finally in Section 5 we present a brief summary of optical MNFs regarding their current challenges and future opportunities.

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13

Aspelmeyer, M., S. Gröblacher, K. Hammerer, and N. Kiesel. "Quantum optomechanics—throwing a glance [Invited]." Journal of the Optical Society of America B 27, no. 6 (May 28, 2010): A189. http://dx.doi.org/10.1364/josab.27.00a189.

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14

Schmidt, Mikołaj K., Ruben Esteban, Felix Benz, Jeremy J. Baumberg, and Javier Aizpurua. "Linking classical and molecular optomechanics descriptions of SERS." Faraday Discussions 205 (2017): 31–65. http://dx.doi.org/10.1039/c7fd00145b.

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The surface-enhanced Raman scattering (SERS) of molecular species in plasmonic cavities can be described as an optomechanical process where plasmons constitute an optical cavity of reduced effective mode volume which effectively couples to the vibrations of the molecules. An optomechanical Hamiltonian can address the full quantum dynamics of the system, including the phonon population build-up, the vibrational pumping regime, and the Stokes–anti-Stokes correlations of the photons emitted. Here we describe in detail two different levels of approximation to the methodological solution of the optomechanical Hamiltonian of a generic SERS configuration, and compare the results of each model in light of recent experiments. Furthermore, a phenomenological semi-classical approach based on a rate equation of the phonon population is demonstrated to be formally equivalent to that obtained from the full quantum optomechanical approach. The evolution of the Raman signal with laser intensity (thermal, vibrational pumping and instability regimes) is accurately addressed when this phenomenological semi-classical approach is properly extended to account for the anti-Stokes process. The formal equivalence between semi-classical and molecular optomechanics descriptions allows us to describe the vibrational pumping regime of SERS through the classical cross sections which characterize a nanosystem, thus setting a roadmap to describing molecular optomechanical effects in a variety of experimental situations.

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15

Asjad, Muhammad, Paolo Tombesi, and David Vitali. "Quantum phase gate for optical qubits with cavity quantum optomechanics." Optics Express 23, no. 6 (March 17, 2015): 7786. http://dx.doi.org/10.1364/oe.23.007786.

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16

Amazioug, M., M. Nassik, and N. Habiballah. "Measure of general quantum correlations in optomechanics." International Journal of Quantum Information 16, no. 05 (August 2018): 1850043. http://dx.doi.org/10.1142/s0219749918500430.

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In this paper, we analyze nonclassical correlations between bipartite states in two optomechanical systems. The first system (Sec. 2) consists of two nanoresonators spatially separated by broadband squeezed light, where each cavity has a fixed mirror and a movable one. The second system (Sec. 3) is an atom-optomechanical system consisting of an atomic ensemble placed inside an optical nanoresonator with a vibrating mirror. For both optomechanical systems, we give the Hamiltonian and the explicit expression of covariance matrix leading to the quantum equations describing the dynamic evolution of the system. Then, the nonclassical correlations are quantified using the logarithmic negativity and Gaussian quantum discord. We propose also a scheme for examining the evolution of Gaussian quantum steering and its asymmetry in each system. We show that the entanglement of the two mechanical modes is very strongly related to the parameters characterizing the environment where the movable mirrors evolve, in particular the squeeze parameter, the optomechanical cooperativity and thermal bath temperature.

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17

Picardi, Michela F., Anatoly V. Zayats, and Francisco J. Rodríguez-Fortuño. "Not every dipole is the same: the hidden patterns of dipolar near fields." Europhysics News 49, no. 4 (July 2018): 14–18. http://dx.doi.org/10.1051/epn/2018402.

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Nanophotonics is a fast-evolving scientific field studying light at the nanoscale. Its fascinating advances typically stem from concepts in modern physics, such as quantum optics, photonic crystals and optomechanics [1]. Occasionally, new insights appear even from the classical Maxwell’s equations of electromagnetism themselves [2].

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18

Teng, J. H., S. L. Wu, B. Cui, and X. X. Yi. "Quantum optomechanics with quadratic cavity–membrane couplings." Journal of Physics B: Atomic, Molecular and Optical Physics 45, no. 18 (September 7, 2012): 185506. http://dx.doi.org/10.1088/0953-4075/45/18/185506.

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19

Marchese, Marta, Hannah McAleese, Angelo Bassi, and Mauro Paternostro. "A macrorealistic test in hybrid quantum optomechanics." Journal of Physics B: Atomic, Molecular and Optical Physics 53, no. 7 (March 9, 2020): 075401. http://dx.doi.org/10.1088/1361-6455/ab6d18.

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20

Paredes-Juárez, A., I. Ramos-Prieto, M. Berrondo, and J. Récamier. "Lie algebraic approach to quantum driven optomechanics." Physica Scripta 95, no. 3 (January 28, 2020): 035103. http://dx.doi.org/10.1088/1402-4896/ab5324.

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21

McClelland, D. E., N. Mavalvala, Y. Chen, and R. Schnabel. "Advanced interferometry, quantum optics and optomechanics in gravitational wave detectors." Laser & Photonics Reviews 5, no. 5 (March 14, 2011): 677–96. http://dx.doi.org/10.1002/lpor.201000034.

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22

Davuluri, Sankar. "Quantum optomechanics without the radiation pressure force noise." Optics Letters 46, no. 4 (February 12, 2021): 904. http://dx.doi.org/10.1364/ol.412822.

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23

Zhou, Yue-Hui, Xian-Li Yin, and Jie-Qiao Liao. "Quantum simulation of tunable and ultrastrong mixed-optomechanics." Optics Express 29, no. 18 (August 17, 2021): 28202. http://dx.doi.org/10.1364/oe.431792.

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24

YIN, ZHANG-QI, ANDREW A. GERACI, and TONGCANG LI. "OPTOMECHANICS OF LEVITATED DIELECTRIC PARTICLES." International Journal of Modern Physics B 27, no. 26 (September 20, 2013): 1330018. http://dx.doi.org/10.1142/s0217979213300181.

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We review recent works on optomechanics of optically trapped microspheres and nanoparticles in vacuum, which provide an ideal system for studying macroscopic quantum mechanics and ultrasensitive force detection. An optically trapped particle in vacuum has an ultrahigh mechanical quality factor as it is well-isolated from the thermal environment. Its oscillation frequency can be tuned in real time by changing the power of the trapping laser. Furthermore, an optically trapped particle in vacuum may rotate freely, a unique property that does not exist in clamped mechanical oscillators. In this review, we will introduce the current status of optical trapping of dielectric particles in air and vacuum, Brownian motion of an optically trapped particle at room temperature, Feedback cooling and cavity cooling of the Brownian motion. We will also discuss about using optically trapped dielectric particles for studying macroscopic quantum mechanics and ultrasensitive force detection. Applications range from creating macroscopic Schrödinger's cat state, testing objective collapse models of quantum wavefunctions, measuring Casimir force, searching short-range non-Newtonian gravity, to detect gravitational waves.

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25

Lakhfif, Abderrahim, Abdelkader Hidki, Jamal El Qars, and Mostafa Nassik. "Dynamics of Rényi-2 correlations in optomechanics." Physica Scripta 97, no. 9 (August 8, 2022): 095102. http://dx.doi.org/10.1088/1402-4896/ac8584.

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Abstract We report on temporal evolution of three different kinds of correlations present between two mechanical resonators of two distant Fabry-Pérot cavities. The two cavities are jointly fed by a two-mode squeezed light and driven by two independent coherent lasers. We consider the initial state of the two mechanical modes as a two-mode uncorrelated thermal state. After evaluating the dynamical covariance matrix elements, we give explicit expressions of the measures of correlations defined via the Rényi-2 entropy, namely, the Rényi-2 quantum mutual information, the Gaussian Rényi-2 entanglement and the Gaussian quantum steering. We find that by an appropriate choice of the system parameters, it is possible to generate entanglement and steering via a quantum correlations transfer from squeezed light to the mechanical bi-mode state. The influence of the squeezing parameter, the optomechanical cooperativity and the environmental thermal noise on the correlations are studied thoroughly. Additionally, we show in various circumstances that the considered temporal correlations respect the hierarchical relation established in L Lami, C Hirche, G Adesso, and A Winter, (2016 Phys. Rev. Lett. 117, 220 502).

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26

Chen, Huajun. "Robust Four-Wave Mixing and Double Second-Order Optomechanically Induced Transparency Sideband in a Hybrid Optomechanical System." Photonics 8, no. 7 (June 24, 2021): 234. http://dx.doi.org/10.3390/photonics8070234.

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We theoretically research the four-wave mixing (FWM) and second-order sideband generation (SSG) in a hybrid optomechanical system under the condition of pump on-resonance and pump off-resonance, where an optomechanical resonator is coupled to another nanomechanical resonator (NR) via Coulomb interaction. Using the standard quantum optics method and input–output theory, we obtain the analytical solution of the FWM and SSG with strict derivation. According to the numerical simulations, we find that the FWM can be controlled via regulating the coupling strength and the frequency difference of the two NRs under different detuning, which also gives a means to determine the coupling strength of the two NRs. Furthermore, the SSG is sensitive to the detuning, which shows double second-order optomechanically induced transparency (OMIT) sidebands via controlling the coupling strength and frequencies of the resonators. Our investigation may increase the comprehension of nonlinear phenomena in hybrid optomechanics systems.

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27

Ji, Jia-Wei, Yu-Feng Wu, Stephen C. Wein, Faezeh Kimiaee Asadi, Roohollah Ghobadi, and Christoph Simon. "Proposal for room-temperature quantum repeaters with nitrogen-vacancy centers and optomechanics." Quantum 6 (March 17, 2022): 669. http://dx.doi.org/10.22331/q-2022-03-17-669.

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We propose a quantum repeater architecture that can operate under ambient conditions. Our proposal builds on recent progress towards non-cryogenic spin-photon interfaces based on nitrogen-vacancy centers, which have excellent spin coherence times even at room temperature, and optomechanics, which allows to avoid phonon-related decoherence and also allows the emitted photons to be in the telecom band. We apply the photon number decomposition method to quantify the fidelity and the efficiency of entanglement established between two remote electron spins. We describe how the entanglement can be stored in nuclear spins and extended to long distances via quasi-deterministic entanglement swapping operations involving the electron and nuclear spins. We furthermore propose schemes to achieve high-fidelity readout of the spin states at room temperature using the spin-optomechanics interface. Our work shows that long-distance quantum networks made of solid-state components that operate at room temperature are within reach of current technological capabilities.

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28

Flick, Johannes, Nicholas Rivera, and Prineha Narang. "Strong light-matter coupling in quantum chemistry and quantum photonics." Nanophotonics 7, no. 9 (September 8, 2018): 1479–501. http://dx.doi.org/10.1515/nanoph-2018-0067.

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AbstractIn this article, we review strong light-matter coupling at the interface of materials science, quantum chemistry, and quantum photonics. The control of light and heat at thermodynamic limits enables exciting new opportunities for the rapidly converging fields of polaritonic chemistry and quantum optics at the atomic scale from a theoretical and computational perspective. Our review follows remarkable experimental demonstrations that now routinely achieve the strong coupling limit of light and matter. In polaritonic chemistry, many molecules couple collectively to a single-photon mode, whereas, in the field of nanoplasmonics, strong coupling can be achieved at the single-molecule limit. Theoretical approaches to address these experiments, however, are more recent and come from a spectrum of fields merging new developments in quantum chemistry and quantum electrodynamics alike. We review these latest developments and highlight the common features between these two different limits, maintaining a focus on the theoretical tools used to analyze these two classes of systems. Finally, we present a new perspective on the need for and steps toward merging, formally and computationally, two of the most prominent and Nobel Prize-winning theories in physics and chemistry: quantum electrodynamics and electronic structure (density functional) theory. We present a case for how a fully quantum description of light and matter that treats electrons, photons, and phonons on the same quantized footing will unravel new quantum effects in cavity-controlled chemical dynamics, optomechanics, nanophotonics, and the many other fields that use electrons, photons, and phonons.

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Liu, Jian, Fei He, and Ka Di Zhu. "Surface plasmonic catalysis based on molecular optomechanics." Europhysics Letters 137, no. 2 (January 1, 2022): 25002. http://dx.doi.org/10.1209/0295-5075/ac4d3f.

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Abstract Nowadays, researchers find that the surface plasmons can mediate some chemical reactions through the generation of the confined plasmonic field, excited electrons, and local heating effect. In this article we suggest a new surface plasmonic photocatalysis mechanism based on the molecular optomechanics which is not considered before. A reaction kinetic model was established to achieve a quantitative study of catalytic efficiency. The catalytic mechanism is not limited to a specific chemical reaction, all molecules with Raman activity can be accelerated dramatically in reaction. For molecules with different mechanical properties, the corresponding optomechanical catalytic pathway needs to be selected. We hope that this work will provide guidance for achieving strong or even ultrastrong catalyses under specific optical conditions. We further demonstrate that the optomechanical effects can also be used for the deceleration, which provides the possibility to design a highly tunable chemical reaction system. We believe that the quantum photochemistry will be further developed and widely used in future research.

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Liu, Jian, and Ka-Di Zhu. "Coupled quantum molecular cavity optomechanics with surface plasmon enhancement." Photonics Research 5, no. 5 (September 6, 2017): 450. http://dx.doi.org/10.1364/prj.5.000450.

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Chen, Yanbei. "Macroscopic quantum mechanics: theory and experimental concepts of optomechanics." Journal of Physics B: Atomic, Molecular and Optical Physics 46, no. 10 (May 9, 2013): 104001. http://dx.doi.org/10.1088/0953-4075/46/10/104001.

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32

Li, Bei-Bei, Jan Bílek, Ulrich B. Hoff, Lars S. Madsen, Stefan Forstner, Varun Prakash, Clemens Schäfermeier, Tobias Gehring, Warwick P. Bowen, and Ulrik L. Andersen. "Quantum enhanced optomechanical magnetometry." Optica 5, no. 7 (July 12, 2018): 850. http://dx.doi.org/10.1364/optica.5.000850.

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Ashrafi, Seyed Mahmoud, Narjes Taghadomi, Alireza Bahrampour, and Rasoul Malekfar. "Coupled quantum molecular cavity optomechanics with surface plasmon enhancement: comment." Photonics Research 8, no. 11 (October 26, 2020): 1783. http://dx.doi.org/10.1364/prj.395738.

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Meyerov, Iosif, Evgeny Kozinov, Alexey Liniov, Valentin Volokitin, Igor Yusipov, Mikhail Ivanchenko, and Sergey Denisov. "Transforming Lindblad Equations into Systems of Real-Valued Linear Equations: Performance Optimization and Parallelization of an Algorithm." Entropy 22, no. 10 (October 6, 2020): 1133. http://dx.doi.org/10.3390/e22101133.

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With their constantly increasing peak performance and memory capacity, modern supercomputers offer new perspectives on numerical studies of open many-body quantum systems. These systems are often modeled by using Markovian quantum master equations describing the evolution of the system density operators. In this paper, we address master equations of the Lindblad form, which are a popular theoretical tools in quantum optics, cavity quantum electrodynamics, and optomechanics. By using the generalized Gell–Mann matrices as a basis, any Lindblad equation can be transformed into a system of ordinary differential equations with real coefficients. Recently, we presented an implementation of the transformation with the computational complexity, scaling as O(N5logN) for dense Lindbaldians and O(N3logN) for sparse ones. However, infeasible memory costs remains a serious obstacle on the way to large models. Here, we present a parallel cluster-based implementation of the algorithm and demonstrate that it allows us to integrate a sparse Lindbladian model of the dimension N=2000 and a dense random Lindbladian model of the dimension N=200 by using 25 nodes with 64 GB RAM per node.

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Pal, Soham, Priya Batra, Tanjung Krisnanda, Tomasz Paterek, and T. S. Mahesh. "Experimental localisation of quantum entanglement through monitored classical mediator." Quantum 5 (June 17, 2021): 478. http://dx.doi.org/10.22331/q-2021-06-17-478.

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Quantum entanglement is a form of correlation between quantum particles that cannot be increased via local operations and classical communication. It has therefore been proposed that an increment of quantum entanglement between probes that are interacting solely via a mediator implies non-classicality of the mediator. Indeed, under certain assumptions regarding the initial state, entanglement gain between the probes indicates quantum coherence in the mediator. Going beyond such assumptions, there exist other initial states which produce entanglement between the probes via only local interactions with a classical mediator. In this process the initial entanglement between any probe and the rest of the system "flows through" the classical mediator and gets localised between the probes. Here we theoretically characterise maximal entanglement gain via classical mediator and experimentally demonstrate, using liquid-state NMR spectroscopy, the optimal growth of quantum correlations between two nuclear spin qubits interacting through a mediator qubit in a classical state. We additionally monitor, i.e., dephase, the mediator in order to emphasise its classical character. Our results indicate the necessity of verifying features of the initial state if entanglement gain between the probes is used as a figure of merit for witnessing non-classical mediator. Such methods were proposed to have exemplary applications in quantum optomechanics, quantum biology and quantum gravity.

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Béguin, J. B., Z. Qin, X. Luan, and H. J. Kimble. "Coupling of light and mechanics in a photonic crystal waveguide." Proceedings of the National Academy of Sciences 117, no. 47 (November 9, 2020): 29422–30. http://dx.doi.org/10.1073/pnas.2014851117.

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Observations of thermally driven transverse vibration of a photonic crystal waveguide (PCW) are reported. The PCW consists of two parallel nanobeams whose width is modulated symmetrically with a spatial period of 370 nm about a 240-nm vacuum gap between the beams. The resulting dielectric structure has a band gap (i.e., a photonic crystal stop band) with band edges in the near infrared that provide a regime for transduction of nanobeam motion to phase and amplitude modulation of an optical guided mode. This regime is in contrast to more conventional optomechanical coupling by way of moving end mirrors in resonant optical cavities. Models are developed and validated for this optomechanical mechanism in a PCW for probe frequencies far from and near to the dielectric band edge (i.e., stop band edge). The large optomechanical coupling strength predicted should make possible measurements with an imprecision below that at the standard quantum limit and well into the backaction-dominated regime. Since our PCW has been designed for near-field atom trapping, this research provides a foundation for evaluating possible deleterious effects of thermal motion on optical atomic traps near the surfaces of PCWs. Longer-term goals are to achieve strong atom-mediated links between individual phonons of vibration and single photons propagating in the guided modes (GMs) of the PCW, thereby enabling optomechanics at the quantum level with atoms, photons, and phonons. The experiments and models reported here provide a basis for assessing such goals.

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Kharel, Prashanta, Glen I. Harris, Eric A. Kittlaus, William H. Renninger, Nils T. Otterstrom, Jack G. E. Harris, and Peter T. Rakich. "High-frequency cavity optomechanics using bulk acoustic phonons." Science Advances 5, no. 4 (April 2019): eaav0582. http://dx.doi.org/10.1126/sciadv.aav0582.

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To date, microscale and nanoscale optomechanical systems have enabled many proof-of-principle quantum operations through access to high-frequency (gigahertz) phonon modes that are readily cooled to their thermal ground state. However, minuscule amounts of absorbed light produce excessive heating that can jeopardize robust ground-state operation within these microstructures. In contrast, we demonstrate an alternative strategy for accessing high-frequency (13 GHz) phonons within macroscopic systems (centimeter scale) using phase-matched Brillouin interactions between two distinct optical cavity modes. Counterintuitively, we show that these macroscopic systems, with motional masses that are 1 million to 100 million times larger than those of microscale counterparts, offer a complementary path toward robust ground-state operation. We perform both optomechanically induced amplification/transparency measurements and demonstrate parametric instability of bulk phonon modes. This is an important step toward using these beam splitter and two-mode squeezing interactions within bulk acoustic systems for applications ranging from quantum memories and microwave-to-optical conversion to high-power laser oscillators.

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He, Li, Huan Li, and Mo Li. "Optomechanical measurement of photon spin angular momentum and optical torque in integrated photonic devices." Science Advances 2, no. 9 (September 2016): e1600485. http://dx.doi.org/10.1126/sciadv.1600485.

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Photons carry linear momentum and spin angular momentum when circularly or elliptically polarized. During light-matter interaction, transfer of linear momentum leads to optical forces, whereas transfer of angular momentum induces optical torque. Optical forces including radiation pressure and gradient forces have long been used in optical tweezers and laser cooling. In nanophotonic devices, optical forces can be significantly enhanced, leading to unprecedented optomechanical effects in both classical and quantum regimes. In contrast, to date, the angular momentum of light and the optical torque effect have only been used in optical tweezers but remain unexplored in integrated photonics. We demonstrate the measurement of the spin angular momentum of photons propagating in a birefringent waveguide and the use of optical torque to actuate rotational motion of an optomechanical device. We show that the sign and magnitude of the optical torque are determined by the photon polarization states that are synthesized on the chip. Our study reveals the mechanical effect of photon’s polarization degree of freedom and demonstrates its control in integrated photonic devices. Exploiting optical torque and optomechanical interaction with photon angular momentum can lead to torsional cavity optomechanics and optomechanical photon spin-orbit coupling, as well as applications such as optomechanical gyroscopes and torsional magnetometry.

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Bruschi, David Edward, and André Xuereb. "‘Mechano-optics’: an optomechanical quantum simulator." New Journal of Physics 20, no. 6 (June 25, 2018): 065004. http://dx.doi.org/10.1088/1367-2630/aaca27.

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Fiaschi, Niccolò, Bas Hensen, Andreas Wallucks, Rodrigo Benevides, Jie Li, Thiago P. Mayer Alegre, and Simon Gröblacher. "Optomechanical quantum teleportation." Nature Photonics 15, no. 11 (October 7, 2021): 817–21. http://dx.doi.org/10.1038/s41566-021-00866-z.

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Feng, Zhi-Bo, Jian-Qi Zhang, Wan-Li Yang, and Mang Feng. "Storage and retrieval of quantum information with a hybrid optomechanics-spin system." Journal of Optics 18, no. 8 (July 4, 2016): 085703. http://dx.doi.org/10.1088/2040-8978/18/8/085703.

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42

Chang, Yue, H. Ian, and C. P. Sun. "Triple coupling and parameter resonance in quantum optomechanics with a single atom." Journal of Physics B: Atomic, Molecular and Optical Physics 42, no. 21 (October 14, 2009): 215502. http://dx.doi.org/10.1088/0953-4075/42/21/215502.

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43

Berezanskaya, Valentina M., Igor Ya Doskoch, and Margarita A. Man’ko. "Light-Pressure Experiments by P. N. Lebedev and Modern Problems of Optomechanics and Quantum Optics." Journal of Russian Laser Research 37, no. 5 (September 2016): 425–33. http://dx.doi.org/10.1007/s10946-016-9593-5.

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Zhang, Teng, Joe Bentley, and Haixing Miao. "A Broadband Signal Recycling Scheme for Approaching the Quantum Limit from Optical Losses." Galaxies 9, no. 1 (January 1, 2021): 3. http://dx.doi.org/10.3390/galaxies9010003.

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Quantum noise limits the sensitivity of laser interferometric gravitational-wave detectors. Given the state-of-the-art optics, the optical losses define the lower bound of the best possible quantum-limited detector sensitivity. In this work, we come up with a broadband signal recycling scheme which gives a potential solution to approaching this lower bound by converting the signal recycling cavity to be a broadband signal amplifier using an active optomechanical filter. We will show the difference and advantage of such a scheme compared with the previous white light cavity scheme using the optomechanical filter in [Phys.Rev.Lett.115.211104 (2015)]. The drawback is that the new scheme is more susceptible to the thermal noise of the mechanical oscillator.

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Yadav, Surabhi, and Aranya B. Bhattacherjee. "Nonlinear optical response in coupled quantum wells optomechanical microcavity." Physica Scripta 97, no. 1 (January 1, 2022): 015102. http://dx.doi.org/10.1088/1402-4896/ac476f.

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Abstract We investigate the optical properties of a hybrid solid-state optomechanical microcavity containing two coupled quantum wells interacting with the cavity mode in the presence of a third-order nonlinear medium and a mechanically compliant distributed Bragg reflector (MC-DBR). The MC-DBR interacts with the cavity mode via the nonlinear radiation pressure effect. The steady state mean-field analysis shows the existence of optical bistability, which can be utilized to design all optical tunable switch. The coupling between the two quantum wells, the interaction between the excitons and the optical mode, the Kerr nonlinearity, and the optomechanical interaction can be tuned to operate the optical switch at lower input laser power. The fluctuation dynamics demonstrate the presence of optomechanically induced transparency (OMIT) and optomechanically induced absorption (OMIA). We find that both OMIT and OMIA can be manipulated efficiently by optomechanical coupling strength and the quantum well tunneling rate.

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Bhattacherjee, Aranya B. "Dicke–Hepp–Lieb superradiant phase transition and independent modes model in quantum optomechanics." Optik 124, no. 21 (November 2013): 5267–70. http://dx.doi.org/10.1016/j.ijleo.2013.03.140.

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Weiß, Matthias, Daniel Wigger, Maximilian Nägele, Kai Müller, Jonathan J. Finley, Tilmann Kuhn, Paweł Machnikowski, and Hubert J. Krenner. "Optomechanical wave mixing by a single quantum dot." Optica 8, no. 3 (March 1, 2021): 291. http://dx.doi.org/10.1364/optica.412201.

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Marquardt, Florian, A. A. Clerk, and S. M. Girvin. "Quantum theory of optomechanical cooling." Journal of Modern Optics 55, no. 19-20 (November 10, 2008): 3329–38. http://dx.doi.org/10.1080/09500340802454971.

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Richardson, Logan, Adam Hines, Andrew Schaffer, Brian P. Anderson, and Felipe Guzman. "Quantum hybrid optomechanical inertial sensing." Applied Optics 59, no. 22 (June 30, 2020): G160. http://dx.doi.org/10.1364/ao.393060.

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Nysten, Emeline D. S., Yong Heng Huo, Hailong Yu, Guo Feng Song, Armando Rastelli, and Hubert J. Krenner. "Multi-harmonic quantum dot optomechanics in fused LiNbO3–(Al)GaAs hybrids." Journal of Physics D: Applied Physics 50, no. 43 (September 27, 2017): 43LT01. http://dx.doi.org/10.1088/1361-6463/aa861a.

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