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Artigos de revistas sobre o assunto "Atom-photon coupling"

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Parvin, Babak. "The effects of atom–cavity coupling constant on physical observables for different transitions". Canadian Journal of Physics 96, n.º 8 (agosto de 2018): 919–25. http://dx.doi.org/10.1139/cjp-2017-0719.

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The aim of this work is to investigate the changing effects of the atom–cavity coupling constant on an atom–cavity system. A three-level atom in the Λ configuration with q-photon transition between levels 2 and 3 is confined in a single-mode Fabry–Pérot optical cavity. To solve the master equation of this system in the steady-state by using the appropriate physical quantities, the matrix continued fractions method for recurrence equations is applied. The behavior of physical observables including atom–field correlation, mean photon number, and second-order coherence function is discussed. The effect of altering the atom–cavity coupling constant for different transitions on these observables is fully considered. The results of calculations show that by increasing this coupling constant, the range of atom–cavity correlation becomes longer, the maximum value of the output mean photon number from the cavity remains almost constant, the broadening in the curves of the mean photon number increases and the lasing process is amplified in the system. Finally, the transformation of the three-level atom into a two-level one under several specific conditions in a four-photon transition case has been studied. The obtained results of the two-level atomic pattern are adequately confirmed by the simulations related to the three-level atom.
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Cheng, Weijun, Zhihai Wang e Tian Tian. "The single- and two-photon scattering in the waveguide QED coupling to a giant atom". Laser Physics 33, n.º 8 (3 de julho de 2023): 085203. http://dx.doi.org/10.1088/1555-6611/acde6e.

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Abstract The giant atom, which means the nonlocal atom-waveguide coupling, gives lots of newfangled physics. In this paper, we study the single- and two-photon scattering in the waveguide quantum electrodynamics on a two-level giant atom. For single-photon scattering, we find that the transmission rate is dependent on the atomic size. For the two-photon scattering, using a reasonable wave function hypothesis, we can get the two-photon scattering state, which consists of the symmetric and anti-symmetric plane wave functions. The other eigenstate is the two-photon bound state, which is orthogonal to the two-photon scattering state. We find that the spatial extent of the two-photon bound state is related to the detuning between waveguide and atom, which is distinguished from the character of the general atom. Our study is beneficial to photon control and the fundamental research of the two-photon scattering.
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Shen, J., X. Y. Zhang, J. H. Teng, S. C. Hou e X. X. Yi. "Master equation for photon mediated phonon–atom coupled system". International Journal of Modern Physics B 28, n.º 19 (12 de junho de 2014): 1450123. http://dx.doi.org/10.1142/s0217979214501239.

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Achieving phonon–atom couplings in cavity optomechanical system could lead to fundamentally new regimes of phonon–matter interaction and the development of sensitive mass and force sensors. Here we derive a master equation to describe the phonon–atom system and numerically simulate the equation. The phonon–atom coupling is mediated by a driven cavity mode. A crossover from the bad cavity limit, which validates the master equation, to the limit of small cavity loss rate is studied.
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Faramawy, F. K. "A Treatment of the Absorption Spectrum for a Multiphoton -Type Three-Level Atom Interacting with a Squeezed Coherent Field in the Presence of Nonlinearities". Journal of Applied Mathematics 2011 (2011): 1–11. http://dx.doi.org/10.1155/2011/145139.

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We study the interaction of a three-level atom with a single mode field through multiphoton transition in a cavity, taking explicitly into account the existence of forms of nonlinearities of both the field and the intensity-dependent atom-field coupling. The analytical forms of the absorption spectrum is calculated using the dressed states of the system. The effects of photon multiplicities, mean photon number, detuning, Kerr-like medium, and the intensity-dependent coupling functional on the absorption spectrum are analyzed.
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AN, NGUYEN BA, e VO TINH. "POLARITON-ADDED MECHANISM FOR NONCLASSICAL EXCITON PRODUCTION". International Journal of Modern Physics B 13, n.º 01 (10 de janeiro de 1999): 73–81. http://dx.doi.org/10.1142/s0217979299000060.

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ZAIT, R. A. "INTENSITY DEPENDENT COUPLING HAMILTONIAN VIA MULTI-PHOTON INTERACTION IN A KERR MEDIUM". International Journal of Modern Physics B 17, n.º 30 (10 de dezembro de 2003): 5795–810. http://dx.doi.org/10.1142/s0217979203023392.

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We study the dynamics and quantum characteristics of a single two-level atom interacting with a single mode cavity field undergoing a multi-photon processes in the presence of a nonlinear Kerr-like medium. The wavefunctions of the multi-photon system are obtained when the atom starts in the excited and in the ground state. The atomic inversion, the squeezing of the radiation field and the quasiprobability distribution Q-function of the field are discussed. Numerical results for these characteristics are presented when the atom starts in the excited state and the field mode in a coherent state. The influence of the presence and absence of the number operator and the Kerr medium for the one- and two-photon processes on the evolution of these characteristics are analyzed.
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Zhou, J. X., Z. H. Zhu, Y. Q. Zhang, K. K. Chen, Z. H. Peng, Y. F. Chai, Z. Z. Xiong e L. Tan. "Phase-modulated single-photon router and chiral scattering between two waveguides coupled by a giant three-level atom". Laser Physics Letters 21, n.º 5 (25 de março de 2024): 055202. http://dx.doi.org/10.1088/1612-202x/ad3436.

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Abstract We investigate a T-shaped single-photon router constructed by two waveguides connected via a giant Λ-type three-level atom. Under a real-space approach, the analytical expressions of the single-photon transmission and reflection amplitudes are obtained. It is shown that a high transfer-rate routing between two waveguides can be effectively achieved by modulating the phase difference, the accumulated phase and the atom-waveguide coupling strengths, and its frequencies can be tuned with a classical driving field. Interestingly, chiral scattering and a single-photon targeted router with direction selectivity have been realized by the ideally equivalent atom-waveguide interaction. We believe that our results have potential applications in constructing optical quantum devices and designing the single-photon quantum routing using the giant-atom setup.
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Liu, Xue-Ying, Shu-Jie Cheng e Xian-Long Gao. "The photon blockade effect of a complete Buck-Sukumar model". Acta Physica Sinica 71, n.º 13 (2022): 1. http://dx.doi.org/10.7498/aps.70.20220238.

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<sec>The Buck-Sukumar (BS) model, with a nonlinear coupling between the atom and the light field, is well defined only when its coupling strength is lower than a critical coupling. Its energy collapses at a critical coupling and is unbounded beyond that value. In other words, the BS model is incomplete. We introduce a simple and a complete BS model by adding a nonlinear photon term into the initial BS model. Considering the rotating wave approximation, this complete BS model conserves the excited number and the parity. By expanding it in the subspace of the product state between the atom and the field, we solve the time-independent Schrödinger equation to obtain the eigenenergy and eigenstate. Furthermore, we explore the influence of the nonlinear photon term on the energy spectrum and the photon blockade effect for the complete BS model by calculating the excited number and second-order correlation function.</sec><sec>Our study shows that, the nonlinear photon term not only eliminates the energy spectral collapse but also makes it well-defined and complete in all the coupling regime. When at the resonance between the atomic and the field frequency, the nonlinear photon term breaks the harmonicity of the energy spectrum and produces a ladder of the excited number in the ground state. Because the larger nonlinear photon term inhibits the photon transition from an energy level to the higher one, it produces the single-photon projection state in the larger coupling region. Accordingly, we find that the nonlinear photon term promotes photon blockade by calculating the second-order correlation function. When at the non-resonant region, the nonlinear photon term enlarges the originally anharmonic energy ladder. For a complete BS model with the fixed nonlinear photon coupling strength and the fixed detuning, the energy level for the positive detuning is lower than that with the negative detuning, and more energy is required to overcome the absorption of a photon. Therefore, the positive detuning promotes the photon blockade. For the negative detuning, the system is more likely to absorb a photon and jump to a higher energy level, and therefore, suppresses the photon blockade.</sec>
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Li, Ming-Cui, e Ai-Xi Chen. "A Photon Blockade in a Coupled Cavity System Mediated by an Atom". Applied Sciences 9, n.º 5 (8 de março de 2019): 980. http://dx.doi.org/10.3390/app9050980.

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We investigate theoretically the photon statistics in a coupled cavity system mediated by a two-level atom. The system consists of a linear cavity weakly driven by a continuous laser, and a nonlinear cavity containing an atom inside. We find that there exists a photon blockade in the linear cavity for both parameter regimes where the coupling strength between the atom and the nonlinear cavity is greater (or less) than the dissipation rate of the linear cavity. We also extend our model by pumping the two cavities simultaneously and find that the conventional photon blockade is apparent in the linear cavity, whereas the unconventional photon blockade appears in the nonlinear cavity. These results show that our work has potential applications for a single photon source in a weakly nonlinear system.
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JOSHI, AMITABH. "SPONTANEOUS EMISSION BY MOVING ATOMS UNDERGOING TWO PHOTON-TRANSITION IN THE STRONG COUPLING REGIME". Modern Physics Letters B 10, n.º 19 (20 de agosto de 1996): 891–901. http://dx.doi.org/10.1142/s0217984996001012.

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The dependence of spontaneous emission on atomic motion for an atom undergoing two-photon transition and moving along the axis of a Fabry-Perot cavity is analyzed here. For this purpose we consider the strong coupling limit of atom and cavity field mode and demonstrate the effects of atomic velocity and spatial mode structure of cavity mode on the excitation probability of atom.
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Teses / dissertações sobre o assunto "Atom-photon coupling"

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Mumba, Mambwe. "EFFECTS OF COUPLING BETWEEN CENTER OF MASS MOTION OF AN ATOM AND A CAVITY MODE: PHOTON STATISTICS AND WAVE-PARTICLE CORRELATIONS". Connect to this document online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1121433361.

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Thesis (M.S.)--Miami University, Dept. of Physics, 2005.
Title from first page of PDF document. Document formatted into pages; contains [1], v, 296 p. : ill. Includes bibliographical references (p. 393-396).
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Schunk, Gerhard [Verfasser], Gerd [Akademischer Betreuer] Leuchs, Hugues de [Gutachter] Riedmatten e Christoph [Gutachter] Marquardt. "Tunable single photons from resonant parametric down-conversion for efficient photon-atom coupling / Gerhard Schunk ; Gutachter: Hugues de Riedmatten, Christoph Marquardt ; Betreuer: Gerd Leuchs". Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/1160444250/34.

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Schunk, Gerhard Rainer [Verfasser], Gerd [Akademischer Betreuer] Leuchs, Hugues de [Gutachter] Riedmatten e Christoph [Gutachter] Marquardt. "Tunable single photons from resonant parametric down-conversion for efficient photon-atom coupling / Gerhard Schunk ; Gutachter: Hugues de Riedmatten, Christoph Marquardt ; Betreuer: Gerd Leuchs". Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/1160444250/34.

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Mahapatra, Sukanya. "Developing slow-mode nanophotonic platform for strong interaction between cold Rb atoms and guided photons". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP022.

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Cette thèse présente les résultats de recherche obtenues au course de ma thèse portant sur la conception, la fabrication et les premières caractérisations optiques de guides d’ondes à cristal photonique à mode lent à base de GaInP, destinés à la forte interaction des photons guidés avec la transition D₂ (780 nm) des atomes de ⁸⁷Rb. L’approche choisie implique le couplage des atomes au mode optique guidé, un concept appelé électrodynamique quantique en guide d’ondes (QED en guide d’ondes). Les guides d’ondes à cristal photonique ont été conçus avec une ingénierie de dispersion pour atteindre un mode lent ayant des indices de groupe élevés (∼ 30 - 50) autour de 780 nm. La conception, la tolérance de fabrication a été prise en compte pour garantie un mode lent sur une bande d’environ 10 nm. Le guide d’ondes est destiné à être suspendu, permettant ainsi un espace libre autour de lui pour faciliter le transport des atomes à proximité et le couplage de la lumière depuis une source laser externe. Les détails sur le processus de nanofabrication optimisé et reproductible sont donnés dans cette thèse. Les défis rencontrés lors de la fabrication et les solutions apportées ont été abordés, suivis d’une analyse des résultats de la fabrication des nanostructures. Une caractérisation optique préliminaire des guides d’ondes a été réalisée, au cours de laquelle les spectres de transmission de différentes nanostructures ont été mesurés
This thesis presents the results of my PhD research on the design, fabrication, and first optical characterisation of GaInP-based slow-mode nanophotonic waveguides intended for the strong interaction of guided photons with the D₂ transition (780 nm) of ⁸⁷Rb atoms. The approach involves coupling atoms to the guided mode of a waveguide, a concept referred to as Waveguide Quantum Electrodynamics (Waveguide QED). The photonic crystal waveguides were designed with dispersion engineering to achieve slow mode with high group indices (∼30 - 50) around 780 nm. In the design, fabrication tolerance has been addressed by ensuring guided mode over a bandwidth of ∼10 nm. The waveguide is intended to be suspended, allowing free space around its vicinity to facilitate the convenient transport of atoms to its proximity and easy coupling of light from an external laser source. Details on an optimized and reproducible nanofabrication process have been reported. The encountered fabrication challenges and the corresponding solutions have been addressed, followed by an analysis of the fabrication results. A preliminary optical characterisation of the waveguides was conducted, in which the transmission spectra featuring the guided mode around 780nm were observed
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Martens, Christoph. "Wellenleiterquantenelektrodynamik mit Mehrniveausystemen". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17416.

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Mit dem Begriff Wellenleiterquantenelektrodynamik (WQED) wird gemeinhin die Physik des quantisierten und in eindimensionalen Wellenleitern geführten Lichtes in Wechselwirkung mit einzelnen Emittern bezeichnet. In dieser Arbeit untersuche ich Effekte der WQED für einzelne Dreiniveausysteme (3NS) bzw. Paare von Zweiniveausystemen (2NS), die in den Wellenleiter eingebettet sind. Hierzu bediene ich mich hauptsächlich numerischer Methoden und betrachte die Modellsysteme im Rahmen der Drehwellennäherung. Ich untersuche die Dynamik der Streuung einzelner Photonen an einzelnen, in den Wellenleiter eingebetteten 3NS. Dabei analysiere ich den Einfluss dunkler bzw. nahezu dunkler Zustände der 3NS auf die Streuung und zeige, wie sich mit Hilfe stationärer elektrischer Treibfelder gezielt auf die Streuung einwirken lässt. Ich quantifiziere Verschränkung zwischen dem Lichtfeld im Wellenleiter und den Emittern mit Hilfe der Schmidt-Zerlegung und untersuche den Einfluss der Form der Einhüllenden eines Einzelphotonpulses auf die Ausbeute der Verschränkungserzeugung bei der Streuung des Photons an einem einzelnen Lambda-System im Wellenleiter. Hier zeigt sich, dass die Breite der Einhüllenden im k-Raum und die Emissionszeiten der beiden Übergänge des 3NS die maßgeblichen Parameter darstellen. Abschließend ergründe ich die Emissionsdynamik zweier im Abstand L in den Wellenleiter eingebetteter 2NS. Diese Dynamik wird insbesondere durch kavitätsartige und polaritonische Zustände des Systems aus Wellenleiter und Emitter ausschlaggebend beeinflusst. Bei der kollektiven Emission der 2NS treten - abhängig vom Abstand L - Sub- bzw. Superradianz auf. Dabei nimmt die Intensität dieser Effekte mit längerem Abstand L zu. Diese Eigenart lässt sich auf die Eindimensionalität des Wellenleiters zurückführen.
The field of waveguide quantum electrodynamics (WQED) deals with the physics of quantised light in one-dimensional (1D) waveguides coupled to single emitters. In this thesis, I investigate WQED effects for single three-level systems (3LS) and pairs of two-level systems (2LS), respectively, which are embedded in the waveguide. To this end, I utilise numerical techniques and consider all model systems within the rotating wave approximation. I investigate the dynamics of single-photon scattering by single, embedded 3LS. In doing so, I analyse the influence of dark and almost-dark states of the 3LS on the scattering dynamics. I also show, how stationary electrical driving fields can control the outcome of the scattering. I quantify entanglement between the waveguide''s light field and single emitters by utilising the Schmidt decomposition. I apply this formalism to a lambda-system embedded in a 1D waveguide and study the generation of entanglement by scattering single-photon pulses with different envelopes on the emitter. I show that this entanglement generation is mainly determined by the photon''s width in k-space and the 3LS''s emission times. Finally, I explore the emission dynamics of a pair of 2LS embedded by a distance L into the waveguide. These dynamics are primarily governed by bound states in the continuum and by polaritonic atom-photon bound-states. For collective emission processes of the two 2LS, sub- and superradiance appear and depend strongly on the 2LS''s distance: the effects increase for larger L. This is an exclusive property of the 1D nature of the waveguide.
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Capítulos de livros sobre o assunto "Atom-photon coupling"

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Sondermann, Markus, e Gerd Leuchs. "Photon-Atom Coupling with Parabolic Mirrors". In Engineering the Atom-Photon Interaction, 75–98. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19231-4_3.

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Chakraborty, Minakshi, e Sandip Sen. "Determination of Qubit Entanglement in One-step Double Photoionization of Helium Atom". In Quantum Dots - Recent Advances, New Perspectives and Contemporary Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.106047.

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Quantum entanglement is a unique phenomenon of quantum mechanics that explains how two subatomic particles are correlated even if they are separated by a vast distance. The phenomena of quantum entanglement are useful resources for quantum information. In this chapter, we will study the entanglement properties of bipartite states of two electronic qubits, without observing spin-orbit interaction (SOI), produced by single-step double photoionization in helium atom following the absorption of a single photon. In absence of SOI, Russell-Saunders coupling (L-S coupling) is applicable. We observe that the entanglement depends significantly on the direction of the ejection, as well as the spin quantization of photoelectrons.
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Milonni, Peter W. "Atoms in Light: Semiclassical Theory". In An Introduction to Quantum Optics and Quantum Fluctuations, 69–128. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199215614.003.0002.

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The atom-field interaction is treated in semiclassical radiation theory, starting from the transformation from the minimal coupling Hamiltonian to the electric dipole form used extensively in quantum optics. The Heisenberg and density matrix approaches are developed and applied to two-state atoms, Bloch equations, Rabi oscillations, Maxwell-Bloch equations, and transition rates for absorption and emission. Einstein’s theory of blackbody radiation based on momentum fluctuations and dissipation is reviewed. The Einstein fluctuation formula is derived and used to introduce wave-particle duality, Hanbury Brown-Twiss correlations, and photon bunching.
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Kenyon, Ian R. "Solutions to Schrödinger’s equation". In Quantum 20/20, 21–36. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198808350.003.0002.

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Eigenstates of the square well potential are calculated and displayed. Barrier penetration and the connection to total internal reflection are explained. α‎–decay by barrier penetration is calculated and used to explain Geiger–Nuttall plots. Gauss–Hermite solutions to the harmonic oscillator potential are deduced and displayed. Zero point fluctuations are introduced. Hydrogen atom eigenstate wavefunctions for the Coulomb potential are calculated and displayed. Principal, orbital angular momentum and intrinsic angular momentum quantum numbers and their allowed combinations are discussed and interpreted: n, l, ml, s and ms. The Stern–Gerlach experiment and Pauli’s perception that electron spin is half-integral are presented; as are Beth’s experiment and photon spin. Dominance of electric dipole transitions and resulting selection rules discussed. Fine spectral structure and spin-orbit coupling are described. Nuclear spin and resulting hyperfine spectral structure are introduced. Landé factors introduced.
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Girvin, Steven M. "Schrödinger cat states in circuit QED". In Current Trends in Atomic Physics, 402–27. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198837190.003.0011.

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Circuit quantum electrodynamics (‘circuit QED’) describes the quantum mechanics and quantum optics of superconducting electrical circuits operating in the microwave regime near absolute zero temperature. It is the analog of cavity QED in quantum optics with the role of the atoms being played by superconducting qubits. The present lecture notes present a brief overview of circuit QED and then focus on some of the novel quantum states that can be produced and measured (via photon number parity and the Wigner function) using the strong coupling between an artificial atom and one or more cavities. Of particular importance are Schrödinger cat states of photons. Despite long being considered exemplars of frail quantum superpositions that quickly decohere, such states have recently been used as the basis for quantum error correction codes which have reached the long-sought goal of enhancing the lifetime of quantum information through active quantum error correction.
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Trabalhos de conferências sobre o assunto "Atom-photon coupling"

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Yang, Jian, e Paul G. Kwiat. "Photon-photon interaction in strong-coupling cavity-atom system". In INTERNATIONAL CONFERENCE ON QUANTITATIVE SCIENCES AND ITS APPLICATIONS (ICOQSIA 2014): Proceedings of the 3rd International Conference on Quantitative Sciences and Its Applications. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4903157.

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Steiner, Matthias, Yue-Sum Chin e Christian Kurtsiefer. "Nonlinear photon-atom coupling in free space". In Quantum Technologies, editado por Andrew J. Shields, Jürgen Stuhler e Miles J. Padgett. SPIE, 2018. http://dx.doi.org/10.1117/12.2305887.

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Maiwald, Robert, Andrea Golla, Martin Fischer, Bénoît Chalopin, Marianne Bader, Simon Heugel, Markus Sondermann e Gerd Leuchs. "Strong Atom-Photon Coupling in Free Space". In Quantum Information and Measurement. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/qim.2012.qm1b.1.

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Glachman, Noah, Shankar Menon, Yuzhou Chai, Kevin Singh, Alan Dibos, Johannes Borregaard e Hannes Bernien. "Telecom Quantum Network Node via Atom-Nanophotonic Coupling". In CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.ff4a.3.

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We propose neutral atoms coupled to telecom nanophotonic cavities as quantum network nodes. Our novel protocol for generating atom-telecom photon entanglement enables a scalable network architecture featuring identical qubits and direct telecom operation.
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Ruan, Yinlan, Brant C. Gibson, Des W. Lau, Andrew Greentree, Hong Ji, Heike Ebendorff-Heidepriem, Brett C. Johnson, Takeshi Ohshima e Tanya Monro. "Atom-Photon Coupling from Nitrogen-vacancy Centers Embedded in Tellurite Microspheres". In CLEO: QELS_Fundamental Science. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/cleo_qels.2015.fth3b.5.

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Alsing, P., e H. J. Carmichael. "Intracavity resonance fluorescence in the strong-coupling limit". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.wdd4.

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The standard theory of resonance fluorescence is a weak-coupling theory.1 If n ¯ is the mean photon number for the driving field, g is the atom field coupling constant, and γ is the Einstein A coefficient, formally the standard theory of resonance fluorescence assumes the limit n ¯ → ∞ , g/ γ → 0, with the ratio of Rabi frequency to atomic linewidth 2 n ¯ n g / γ finite. The limit g/γ → 0 allows the variation of the Rabi frequency 2 n g across the photon number distribution of the driving field to be neglected. By placing the atom inside an optical cavity the ratio g/γ can be changed. In this paper we calculate spectra for intracavity resonance fluorescence in the strong-coupling limit g/γ ≫ 1, g/κ ≫ 1, where κ is the cavity linewidth. We consider a single two-level atom interacting on resonance with a single cavity mode driven by a resonant coherent field. The cavity subtends a small solid angle at the atom, so that the spontaneous emission into free-space modes is not negligible. We calculate the spectrum of the light transmitted by the cavity (the transmitted spectrum) and the spectrum of the light radiated by the atom into free space (the fluorescent spectrum). The transmitted and fluorescent spectra show fundamental differences from the (weak-coupling) spectrum of free-space resonance fluorescence.
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Rempe, G., R. J. Thompson, R. J. Brecha e H. J. Kimble. "Cavity quantum electrodynamics with strong coupling in the optical domain". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.fo1.

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The radiative properties of atoms inside an optical cavity can be dramatically changed with respect to those in free space. In the strong-coupling limit, the reversible dipole interaction between an atom and the cavity field dominates the irreversible decay resulting from spontaneous emission and cavity damping. In this limit the atom and field can no longer be regarded as separate quantities but instead form a composite dynamic system. To enhance the dipole coupling constant and increase the photon storage time, our experiments are performed with a small cavity 1 mm long, with a finesse of 8 × 104. On average, 0.4 photons are sufficient to saturate the resonance transition at 852 nm for the cesium atoms used, while the cooperativity parameter for a single atom is 2. Optical bistability is studied in this system over the range 3 < N < 65 atoms inside the cavity, with the semiclassical theory predicting bistability for N > 5. We report observations of manifestly quantum effects in this regime, including photon antibunching and sub-Poissonian photon statistics, with the magnitude of these nonclassical effects observed to be largely independent of the number of intracavity atoms.
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Bashkirov, Eugene K., e Svetlana V. Volkova. "Dynamics of two-atom two-photon Tavis-Cummings model with intensity-dependent coupling". In Saratov Fall Meeting 2013, editado por Elina A. Genina, Vladimir L. Derbov, Igor Meglinski e Valery V. Tuchin. SPIE, 2014. http://dx.doi.org/10.1117/12.2051466.

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Golla, Andrea, Benoit Chalopin, Robert Maiwald, Alessandro S. Villar, Irina Harder, Markus Sondermann e Gerd Leuchs. "Generation of a light mode optimized for efficient free-space photon-atom coupling". In 12th European Quantum Electronics Conference CLEO EUROPE/EQEC. IEEE, 2011. http://dx.doi.org/10.1109/cleoe.2011.5943420.

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Rice, P. R., e H. J. Carmichael. "Nonclassical photon statistics in the transmission from a resonant cavity containing a single atom". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/oam.1986.tua9.

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Resumo:
We consider an optical cavity containing a single two-level atom driven on resonance by an external laser source.1 We focus on the limit of weak excitation where the dynamic response of this system is governed by just three parameters: the atom-field coupling constant g, spontaneous emission rate γ for the atom, and cavity decay rate κ. The statistics of the transmitted light are analyzed as a function of g, γ, and κ, in terms of the second-order correlation function g(2)(τ), and the quadrature variances measured in a homodyne detection scheme. Squeezing and photon antibunching exist over a wide range of parameters. For γ ~ κ, the system can exhibit an oscillatory response, even when the mean intracavity photon number is much less than unity.2 The oscillations can be understood in terms of the coupling between the free atom-field eigenstates |0,−>, |0,+>, and |1,−>. The oscillation frequency is determined by the energy level splitting produced between the degenerate one-quantum states |0,+> and |1,−> by the atom-field interaction. The second-order correlation function can exhibit a novel nonclassical effect, where, for g(2)(0) ≠ 0, at some finite delay τ0, the correlation function dips exactly to zero—g(2)(τ0) = 0.
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