Quantum nonreciprocality in quadratic optomechanics

Xu, Xunwei; Zhao, Yan-Jun; Wang, Hui; Jing, Hui; Chen, Ai-Xi

doi:10.1364/prj.8.000143

Cited by 59 publications

(17 citation statements)

References 70 publications

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“…Before ending this section, we remark that one mechanical mode coupling to WGC optical modes has been demonstrated experimentally [ 52–55 ] and extended to that containing the optical Sagnac effect. [ 56–58 ] The present work continues the investigation on this topic and focus on the aspect of its nonreciprocal quantum property.…”

Section: Nonreciprocal Mechanical Squeezingmentioning

confidence: 90%

Nonreciprocal Mechanical Squeezing in a Spinning Optomechanical System

et al. 2020

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A scheme for nonreciprocal mechanical squeezing (NMS) based on the three‐mode optomechanical interaction is proposed. In this scheme, a mechanical mode couples to a spinning whispering‐gallery‐cavity (WGC) mode and to an optical mode. An external laser is coupled into and thus drives the WGC via a waveguide. Mechanical squeezing results from the joint effect of the mechanical intrinsic nonlinearity and the quadratic optomechanical coupling, which, in the presence of strong thermal noise, is still considerable, while the nonreciprocity originates from the optical Sagnac effect. There are two NMS areas in the parametric space, one works for the laser driving from the left of the waveguide and another, from the right. For a given spinning speed of the WGC, the squeezing values in these two areas are equal if the corresponding detunings of the WGC differ from each other by two‐times of the Sagnac–Fizeau shift. At the red‐detuning resonance, the analytical results for the mechanical squeezing and cooling are obtained. The NMS scheme is robust to the thermal noise of the mechanical environment.

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Section: Nonreciprocal Mechanical Squeezingmentioning

confidence: 90%

Nonreciprocal Mechanical Squeezing in a Spinning Optomechanical System

et al. 2020

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“…Until now, various methods for generation of multiple-photon states have been proposed in atom-coupled photonic waveguides [8][9][10], Rydberg atomic ensembles [11,12], Kerr cavity systems [13], cavity optomechanical systems [14,15], cavity quantum electrodynamics (QED) systems [16], and multiple-level atomic systems [17][18][19][20][21][22][23][24]. Unlike the photon blockade effect [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39], the energy unit of the multiple-photon bundle emission is a bundle of several photons rather than a single photon. In addition, the physical mechanism for multiple-photon bundle emission is a bundle of photons blocking the transmission of the next bundle of photons, rather than n photons blocking the transmission of the (n + 1)th photon.…”

Section: Introductionmentioning

confidence: 99%

Multiple-photon bundle emission in the $n$-photon Jaynes-Cummings model

Jiang¹,

Zou²,

Wang³

et al. 2022

Preprint

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We study the multiple-photon bundle emission in the n-photon Jaynes-Cummings model composed of a two-level system coupled to a single-mode optical field via the n-photon exciting process.Here, the two-level system is strongly driven by a near-resonant monochromatic field, and hence the system can work in the Mollow regime, in which a super-Rabi oscillation between the zero-photon state and the n-photon state can take place under proper resonant conditions. We calculate the photon number populations and the standard equal-time high-order correlation functions, and find that the multiple-photon bundle emission can occur in this system. The multiple-photon bundle emission is also confirmed by investigating the quantum trajectories of the state populations and both the standard and generalized time-delay second-order correlation functions for multiple-photon bundle. Our work paves the way towards the study of multiple-photon quantum coherent devices, with potential application in quantum information sciences and technologies.

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“…Up to now, the controllable single-photon states have been extensively studied by using the mechanisms of conventional PB and unconventional PB. The former mechanism requires a strong optical nonlinearity with large enough energy-spectrum anharmonicity in the systems, ranging from cavity quantum electrodynamics (QED) [8][9][10][11][12][13][14][15][16] to circuit QED [17][18][19][20][21], Kerrtype nonlinear systems [7,[22][23][24][25][26][27][28], and optomechanical resonators [29][30][31][32][33][34][35][36]. The latter mechanism relies on the destructive quantum interference by constructing different quantum transition pathways [37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Nonclassical correlated deterministic single-photon pairs for a trapped atom in bimodal cavities

Peng,

Deng

2022

Preprint

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Single photons and single-photon pairs, inherently nonclassical in their nature, are fundamental elements of quantum sciences and technologies. Here, we propose to realize the nonclassical correlated deterministic photon pairs at the single-photon level for a single atom trapped in bimodal cavities. It is shown that the photon emissions for bimodal cavities exhibit a high single photon purity and relatively large intracavity photon numbers, which are ascribed to the combination of optical Stark shift enhanced energy-spectrum anharmonicity and quantum interference suppressed two-photon excitation. Our scheme generates photon-photon pairs with strong photon blockade for cavity modes via constructing a highly tunable cavity-enhanced deterministic parametric downconversion process. Furthermore, we show that the cross-correlation function between the two cavity modes vastly violates the Cauchy-Schwarz inequality of the classical boundary, which unambiguously demonstrates the nonclassicality of the single-photon pairs. Our result reveals a prominent strategy to generate the high-quality two-mode single-photon sources with strong nonclassical correlation, which could provide versatile applications in distribution of quantum networks, long distance quantum communication, and fundamental tests of quantum physics.

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Quantum nonreciprocality in quadratic optomechanics

Cited by 59 publications

References 70 publications

Nonreciprocal Mechanical Squeezing in a Spinning Optomechanical System

Nonreciprocal Mechanical Squeezing in a Spinning Optomechanical System

Multiple-photon bundle emission in the $n$-photon Jaynes-Cummings model

Nonclassical correlated deterministic single-photon pairs for a trapped atom in bimodal cavities

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