Bibliographies thématiques / Sideband cooling

Littérature scientifique sur le sujet « Sideband cooling »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "Sideband cooling"

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Mielke, J., J. Pick, J. A. Coenders, T. Meiners, M. Niemann, J. M. Cornejo, S. Ulmer et C. Ospelkaus. « 139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of 9Be+ ions in a Penning trap ». Journal of Physics B : Atomic, Molecular and Optical Physics 54, no 19 (6 octobre 2021) : 195402. http://dx.doi.org/10.1088/1361-6455/ac319d.

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Abstract We demonstrate the phase locking of two ultraviolet (UV) laser sources by modulating a fundamental infrared (IR) laser with fourth-order sidebands using an electro-optic modulator and the phase locking of one sideband to a second fundamental IR laser. Subsequent sum frequency generation and second harmonic generation successfully translates the frequency offset to the UV domain. The phase lock at 139 GHz is confirmed through stimulated Raman transitions for the thermometry of 9Be+ ions confined in a cryogenic Penning trap. This technique might be used for the sideband cooling of single 9Be+ ions as well as sympathetic cooling schemes and quantum-logic-based measurements in Penning traps in the future.
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Wells, Ann Laurie, et Richard J. Cook. « Simple theory of sideband cooling ». Physical Review A 41, no 7 (1 avril 1990) : 3916–23. http://dx.doi.org/10.1103/physreva.41.3916.

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Bao, Yang, Qinghong Liao, Qingmin Zhao et Jing Wu. « Suppression of Stokes heating processes and improved optomechanical cooling with frequency modulation ». Communications in Theoretical Physics 74, no 4 (1 avril 2022) : 045102. http://dx.doi.org/10.1088/1572-9494/ac5588.

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Abstract Ground-state cooling of mesoscopic mechanical objects is still a major challenge in the unresolved-sideband regime. We present a frequency modulation (FM) scheme to achieve cooling of the mechanical resonator to its ground-state in a double-cavity optomechanical system containing a mechanical resonator. The mean phonon number is determined by numerically solving a set of differential equations derived from the quantum master equations. Due to efficient suppression of Stokes heating processes in the presence of FM, the ground-state cooling, indicated by numerical calculations, is significantly achievable, regardless of whether in the resolved-sideband regime or the unresolved-sideband regime. Furthermore, by choosing parameters reasonably, the improvement of the quantum cooling limit is found to be capable of being positively correlated with the modulation frequency. This method provides new insight into quantum manipulation and creates more possibilities for applications of quantum devices.
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Zhao, Daiyue, Shaopeng Liu, Junfeng Wang, Yaya Mao, Ying Li et Bo Liu. « Simultaneous measurement for amplitude and frequency of time-harmonic force based on optomechanically induced nonlinearity ». Journal of Applied Physics 131, no 10 (14 mars 2022) : 104401. http://dx.doi.org/10.1063/5.0085477.

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An accurate readout of the mechanical motion using optomechanical coupling is highly desired for on-chip sensing applications but it remains challenging due to the uncertainty caused by time-dependent parameters and noisy fluctuations. Here, we propose an efficient scheme to realize simultaneous measurement for both amplitude and frequency of the time-harmonic force (THF) in a hybrid optomechanical system via a nonlinear sum sideband effect. In this optomechanical system assisted by a degenerate parametric amplifier (DPA), the nonlinear optomechanical interaction between the external THF, optical, and mechanical modes is used to construct the frequency component of optical sum sidebands. Using experimentally achievable parameters, we find that the conversion efficiency of the sum sidebands has a significant enhancement when the nonlinear gain coefficient of DPA increases. In the scheme of the dual-parameter measurement, we also report that the amplitude of THF could be independently detected by observing the intensity variation of the lower sum sideband, while the frequency of THF could be separately read by monitoring the frequency of the prominent peak in this nonlinear spectrum. Benefitting from the optical cooling of a mechanical element, the theoretical results show that the minimum resolutions for detecting the amplitude and the frequency of THF are approximately [Formula: see text] and [Formula: see text], respectively.
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Schliesser, A., R. Rivière, G. Anetsberger, O. Arcizet et T. J. Kippenberg. « Resolved-sideband cooling of a micromechanical oscillator ». Nature Physics 4, no 5 (13 avril 2008) : 415–19. http://dx.doi.org/10.1038/nphys939.

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Guo, Jingkun, et Simon Gröblacher. « Coherent feedback in optomechanical systems in the sideband-unresolved regime ». Quantum 6 (3 novembre 2022) : 848. http://dx.doi.org/10.22331/q-2022-11-03-848.

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Preparing macroscopic mechanical resonators close to their motional quantum groundstate and generating entanglement with light offers great opportunities in studying fundamental physics and in developing a new generation of quantum applications. Here we propose an experimentally interesting scheme, which is particularly well suited for systems in the sideband-unresolved regime, based on coherent feedback with linear, passive optical components to achieve groundstate cooling and photon-phonon entanglement generation with optomechanical devices. We find that, by introducing an additional passive element – either a narrow linewidth cavity or a mirror with a delay line – an optomechanical system in the deeply sideband-unresolved regime will exhibit dynamics similar to one that is sideband-resolved. With this new approach, the experimental realization of groundstate cooling and optomechanical entanglement is well within reach of current integrated state-of-the-art high-Q mechanical resonators.
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Peik, E., J. Abel, Th Becker, J. von Zanthier et H. Walther. « Sideband cooling of ions in radio-frequency traps ». Physical Review A 60, no 1 (1 juillet 1999) : 439–49. http://dx.doi.org/10.1103/physreva.60.439.

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Morigi, G., J. Eschner, J. I. Cirac et P. Zoller. « Laser cooling of two trapped ions : Sideband cooling beyond the Lamb-Dicke limit ». Physical Review A 59, no 5 (1 mai 1999) : 3797–808. http://dx.doi.org/10.1103/physreva.59.3797.

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Wei, Chun-Hua, et Shu-Hua Yan. « Raman sideband cooling of rubidium atoms in optical lattice ». Chinese Physics B 26, no 8 (août 2017) : 080701. http://dx.doi.org/10.1088/1674-1056/26/8/080701.

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Park, Young-Shin, et Hailin Wang. « Resolved-sideband and cryogenic cooling of an optomechanical resonator ». Nature Physics 5, no 7 (7 juin 2009) : 489–93. http://dx.doi.org/10.1038/nphys1303.

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Thèses sur le sujet "Sideband cooling"

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Webster, Simon. « Raman sideband cooling and coherent manipulation of trapped ions ». Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424740.

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Jarlaud, Vincent Pierre Yves. « Sideband cooling of ion coulomb crystals in a Penning trap ». Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/63832.

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This thesis reports on the progress of resolved sideband cooling on the S1/2 <-> D5\2 transition of 40Ca+ ions in a Penning trap. We demonstrate cooling of the axial motion of a single ion to the ground state over a wide range of trapping frequencies (67 kHz to 420 kHz) with a mean motional state ranging from nz = 0.07(1) to nz = 0.015(18). We are also able to cool the radial motion of the ion close to the ground state with mean motional states below one for both the modified cyclotron and magnetron modes. In order to carry out sideband cooling of the radial mode, the ion is initially cooled with Doppler cooling in the presence of an axialisation field. Efficient sideband cooling outside the Lamb-Dicke regime is performed using complex cooling sequences featuring laser pulses at different frequencies. The sideband cooling technique is extended to one- and two- dimensional ion Coulomb crystals. For a two-ion chain, aligned with the magnetic field, we measure for the centre of mass mode a final mean motional state nc = 0.25(6) and for the breathing mode nb = 0.07(4) with respective heating rates of 11(2) s-1 and 1(1) s-1. Near ground state cooling of the transverse (axial) modes of two-dimensional planar crystals made of up to 10 ions is achieved. A coherent drive of the cold ions is demonstrated by the observation of Rabi oscillations. Ramsey experiments are performed on a single ion to study the coherence of the system. We find a 1/e coherence time of the optical transition S1/2 <-> D5/2 equal to 1.76(7) ms. This was increased to 13.2(6) ms using Uhrig dynamical decoupling. By creating superpositions of the motional states of the ion, we measure the coherence time of the axial motion. A maximum of 565(21) ms is found at 420 kHz.
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Goodwin, Joseph Francis. « Sideband cooling to the quantum ground state in a Penning trap ». Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/27249.

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For 35 years, laser-cooled trapped ions have been at the frontier of progress in quantum computing, quantum simulation and precision measurement, and remain one of the most valuable tools in these fields to this day. Most of these experiments are predicated upon or benefit from the ability to place ions in the motional quantum ground state, a technique that was first demonstrated in radio-frequency ion traps 25 years ago. For a range of crucial experiments that are impossible to conduct in radiofrequency traps or are not well suited to this architecture, Penning traps provide an important alternative. However, the performance of Penning traps had been limited by the fact that ground-state cooling was yet to be achieved in such a system. This thesis reports the first demonstration of resolved-sideband cooling in a Penning trap, for 40Ca+ions cooled with light at 729-nm, achieving a ground state occupation of 99% in one dimension. Demonstrations of the coherent manipulations possible at this level of confinement are presented. The ion heating rate is measured and although higher than might be expected given the unusually large ion-electrode distance remains amongst the lowest reported in any trap to date. Achieving this result required the development of a number of new experimental systems and major upgrades to the stability and reliability of the experiment, the details of which are also given. The thesis also presents theoretical work into the use of two-dimensional Coulomb crystals in a Penning trap as a resource for quantum information. Using the symmetries of the crystal, we find that it is possible to engineer complex entangled states, specifically two small quantum error correcting codes, using a very small number of global entangling pulses. Efficient entanglement protocols such as these are vital for the implementation of useful quantum error correction.
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Donnellan, Sean. « Towards sideband cooling of a single 40Ca+ ion in a Penning trap ». Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9513.

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This thesis presents work aimed towards achieving sideband cooling of 40Ca+ ions in a Penning trap. The observation of an increase in the number of quantum jumps as a function of the trapping magnetic field is first presented. This observation is explained by the ion falling into a long-lived D5/2 state, out of which the ion is not being re-pumped. The ion can fall into this state due to mixing of the fine structure components with the same mJ quantum number induced by the applied magnetic field. A calculation of the mixing and shelving rate as a function of magnetic field strength is presented. This theory matches well with the experimental results observed. This work has been presented in a publication in which a perturbative analysis was used. An alternative analysis is presented here in which the full Hamiltonian is diagonalised. The essential conclusions however remain unchanged. This ‘J-state mixing’ effect means re-pumping from each of the six D5/2 state sub-levels of our ion is required for efficient laser cooling. This is achieved by the addition of a system comprising an 854 nm laser and a fibre EOM to provide the radiation required to re-pump these levels. The same EOM is then used to re-pump out of the four sub-levels of the D3/2 state using a single 866 nm laser. This is a great simplification of the experimental setup required to cool a 40Ca+ ion in a Penning trap which would otherwise require ten separate lasers to independently address each of the D sub-states. Achieving efficient repumping leads to the ability to perform pulsed spectroscopy on the quadrupole S1/2 → D5/2 transition in 40Ca+ . Preliminary results of this spectroscopy in a radio-frequency trap are presented.
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Goeders, James E. « Resolved sideband spectroscopy for the detection of weak optical transitions ». Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49082.

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This thesis reports on the setup of a new ion trap apparatus designed for experiments with single ⁴⁰Ca⁺ ions to perform molecular spectroscopy. The calcium ion is laser cooled, allowing for sympathetic cooling of the nonfluorescing molecular ion. The aim of these experiments is to explore loading and identifying molecular ions in RF-Paul traps, as well as developing new spectroscopic tools to measure transitions of molecular ions via the fluorescence of co-trapped ⁴⁰Ca⁺ ions. Ground state cooling of a mixed ion pair is implemented as a first step towards increasing the sensitivity of our technique to the level necessary to measure transitions with low scattering rates (like those present in molecular ions). Doppler cooling on the S(1/2)->P(1/2) transition of the calcium ion results in the formation of a Coulomb crystal, the behavior of which may be used to infer properties of the molecular ion. Following cooling, sideband spectroscopy on the narrow S(1/2)->D(5/2) quadrupole transition of calcium may be used to identify the mass of single molecular ions. This method is verified via a non-destructive measurement on ⁴⁰CaH⁺ and ⁴⁰Ca¹⁶O⁺. The normal modes of the Coulomb crystal can also be used to extract information from the target ion to the control ion. By driving the blue side of a transition, laser induced heating can be put into the two ion system, which leads to changes in fluorescence of the ⁴⁰Ca⁺ ion, first demonstrated with two Ca⁺ isotopes. Increasing the sensitivity of this technique requires ground state cooling of both the ⁴⁰Ca⁺ ion and the ion of interest, enabling the transfer of the ion's motional state into the ground state with high probability. This thesis demonstrates ground state cooling of the atomic ion and sympathetic cooling of a second ion (⁴⁴Ca⁺). Once in the ground state, heating of the Coulomb crystal by scattering photons off of the spectroscopy ion can be measured by monitoring the resolved motional sidebands of the S(1/2)->D(5/2) transition of ⁴⁰Ca⁺, allowing for spectral lines to be inferred. Future experiments will investigate this technique with molecular ions.
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Chapitres de livres sur le sujet "Sideband cooling"

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Nemova, Galina. « Raman Sideband Cooling ». Dans Field Guide to Laser Cooling Methods. SPIE, 2019. http://dx.doi.org/10.1117/3.2538938.ch79.

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Nemova, Galina. « Degenerate Raman Sideband Cooling ». Dans Field Guide to Laser Cooling Methods. SPIE, 2019. http://dx.doi.org/10.1117/3.2538938.ch80.

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Nemova, Galina. « Motional Sideband Excitation ». Dans Field Guide to Laser Cooling Methods. SPIE, 2019. http://dx.doi.org/10.1117/3.2538938.ch78.

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Actes de conférences sur le sujet "Sideband cooling"

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Rugango, Rene, et Kenneth Brown. « SYMPATHETIC SIDEBAND COOLING OF CaH+ ». Dans 69th International Symposium on Molecular Spectroscopy. Urbana, Illinois : University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.rh09.

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Triana, Johan F., et Leonardo A. Pachon. « Non-Markovian optimal sideband cooling ». Dans ADVANCES IN MATERIALS, MACHINERY, ELECTRONICS II : Proceedings of the 2nd International Conference on Advances in Materials, Machinery, Electronics (AMME 2018). Author(s), 2018. http://dx.doi.org/10.1063/1.5031696.

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Albrecht, B., Y. Meng, C. Clausen, A. Dareau, P. Schneeweiss et A. Rauschenbeutel. « Microwave sideband cooling of nanofiber-trapped atoms ». Dans 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2017. http://dx.doi.org/10.1109/cleoe-eqec.2017.8087336.

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Vinjanampathy, Sai, Xiaoting Wang, Fredrick W. Strauch et Kurt Jacobs. « Ultra-Efficient Cooling of Resonators : Beating Sideband Cooling with Quantum Control ». Dans Frontiers in Optics. Washington, D.C. : OSA, 2011. http://dx.doi.org/10.1364/fio.2011.jtua34.

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Scarabel, Jordan, Kenji Shimizu, Moji Ghadimi, Mirko Lobino et Erik Streed. « Raman Sideband Cooling 171Yb+ Across Zeeman Sub-levels ». Dans Frontiers in Optics. Washington, D.C. : OSA, 2021. http://dx.doi.org/10.1364/fio.2021.jw7a.33.

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Teufel, J. D., T. Donner, D. Li, K. W. Lehnert et R. W. Simmonds. « Sideband Cooling Micromechanical Motion to the Quantum Ground State ». Dans International Quantum Electronics Conference. Washington, D.C. : OSA, 2011. http://dx.doi.org/10.1364/iqec.2011.i95.

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Jayich, Andrew, Jack Sankey, Andrei Petrenko et Jack Harris. « Resolved Sideband Laser Cooling of a Cryogenic Micromechanical Membrane ». Dans Quantum Electronics and Laser Science Conference. Washington, D.C. : OSA, 2011. http://dx.doi.org/10.1364/qels.2011.qthm3.

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Thompson, R. C., J. F. Goodwin, G. Stutter et D. M. Segal. « Optical Sideband Cooling of Ions in a Penning Trap ». Dans XXII International Conference on Laser Spectroscopy (ICOLS2015). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813200616_0007.

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SINCLAIR, A. G., M. A. WILSON, V. LETCHUMANAN et P. GILL. « RESOLVED SIDEBAND COOLING OF A SINGLE TRAPPED STRONTIUM ION ». Dans Proceedings of the 6th Symposium. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777713_0062.

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Schliesser, A., R. Riviere, G. Anetsberger, O. Arcizet et T. J. Kippenberg. « Resolved-sideband laser cooling of a micro-mechanical oscillator ». Dans 2008 Conference on Lasers and Electro-Optics (CLEO). IEEE, 2008. http://dx.doi.org/10.1109/cleo.2008.4551969.

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