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We propose a method to achieve photon pair propagation in an array of three-level superconducting circuits. Assuming experimentally accessible three-level artificial atoms with strong anharmonicity coupled via microwave transmission lines…

Quantum Physics · Physics 2020-10-21 Sayan Lahiri , Suman Mondal , Kanhaiya Pandey , Tapan Mishra

We develop an approach to light-matter coupling in waveguide QED based upon scattering amplitudes evaluated via Dyson series. For optical states containing more than single photons, terms in this series become increasingly complex and we…

Quantum Physics · Physics 2018-04-25 David L. Hurst , Pieter Kok

Unidirectional photon emission is crucial for constructing quantum networks and realizing scalable quantum information processing. In the present work an efficient scheme is developed for the unidirectional emission of a tunable squeezed…

Quantum Physics · Physics 2023-08-31 Ji-kun Xie , Sheng-li Ma , Ya-long Ren , Shao-yan Gao , Fu-li Li

Sources of photons with controllable quantum properties such as entanglement and squeezing are desired for applications in quantum information, metrology, and sensing. However, fine-grained control over these properties is hard to achieve,…

In this work, we present a quantum theory for pulsed photon pair generation in a single ring resonator. Our approach combines the Heisenberg picture input-output formalism with the Ikeda mapping from classical nonlinear optics. In doing so,…

Quantum Physics · Physics 2025-02-17 Youngbin Kim , Seongjin Jeon , Young-Ik Sohn

Light forces can be harnessed to levitate mesoscopic objects and cool them down towards their motional quantum ground state. Significant roadblocks on the way to scale up levitation from a single to multiple particles in close proximity are…

Physical systems usually exhibit quantum behavior, such as superpositions and entanglement, only when they are sufficiently decoupled from a lossy environment. Paradoxically, a specially engineered interaction with the environment can…

In this paper, we study the spatiotemporal distribution of the photon electric field produced by the scattering of a single photon narrow pulse from a system of two identical qubits coupled to continuum modes in a one-dimensional (1D) open…

Quantum Physics · Physics 2023-12-19 Ya. S. Greenberg , A. A. Shtygashev , A. G. Moiseev

We propose a novel cooling scheme for realising single photon sideband cooling on particles trapped in a state-dependent optical potential. We develop a master rate equation from an ab-initio model and find that in experimentally feasible…

Quantum Gases · Physics 2022-02-11 Federico Berto , Elia Perego , Lucia Duca , Carlo Sias

We propose and theoretically investigate a model to realize cascaded optical nonlinearity with few atoms and photons in one-dimension (1D). The optical nonlinearity in our system is mediated by resonant interactions of photons with…

Optics · Physics 2013-08-20 Dibyendu Roy

We propose a method to deterministically prepare a desired quantum state in a one-dimensional (1D) continuum by a shaped photon pulse. This method is based on time-reverse of the quantum emission process. We show that the desired quantum…

Quantum Physics · Physics 2018-08-15 Zeyang Liao , M. Suhail Zubairy

We calculate thermal corrections to the non-linear QED effective action for low-energy photon interactions in a background electromagnetic field. The high-temperature expansion shows that at $T \gg m$ the vacuum contribution is exactly…

High Energy Physics - Phenomenology · Physics 2009-10-31 Per Elmfors , Bo-Sture Skagerstam

A doubled q-Fock space is constructed by introducing an idle mode system dual to the physical one under consideration. The quantum entanglements of photons in the squeezed states and thermal states based on the doubled q-Fock space are…

Quantum Physics · Physics 2009-11-07 He-Shan Song , Dong Mi , Ling Zhou , Chong Li

Atoms in spatially dependent light fields are attracted to local intensity maxima or minima depending on the sign of the frequency difference between the light and the atomic resonance. For light fields confined in open high-Q optical…

Quantum Physics · Physics 2019-08-05 Arthur Jungkind , Wolfgang Niedenzu , Helmut Ritsch

We analyze the spectral properties of squeezed light produced by means of pulsed, single-pass degenerate parametric down-conversion. The multimode output of this process can be decomposed into characteristic modes undergoing independent…

Quantum Physics · Physics 2007-05-23 Wojciech Wasilewski , A. I. Lvovsky , Konrad Banaszek , Czeslaw Radzewicz

The propagation of polarized photons in optical media can be effectively modeled by means of quantum dynamical semigroups. These generalized time evolutions consistently describe phenomena leading to loss of phase coherence and dissipation…

Quantum Physics · Physics 2009-11-07 F. Benatti , R. Floreanini

We present a fully quantum theory describing the cooling of a cantilever coupled via radiation pressure to an illuminated optical cavity. Applying the quantum noise approach to the fluctuations of the radiation pressure force, we derive the…

Mesoscale and Nanoscale Physics · Physics 2008-07-22 Florian Marquardt , Joe P. Chen , A. A. Clerk , S. M. Girvin

This study presents the coherent and dissipative coupling realized in the hybrid photonic resonators that have been achieved via the constructive and destructive interference of the photonic resonator fields with the radiation of a common…

We study theoretically the nonstationary circuit QED system in which the artificial atom transition frequency, or the atom-cavity coupling, have a small periodic time modulation, prescribed externally. The system formed by the atom coupled…

Quantum Physics · Physics 2009-06-17 A. V. Dodonov

Photon condensation in semiconductor microcavities is a transformative technique for engineering quantum states of light at room temperature by tailoring strong but incoherent light-matter interactions. While continuous-wave and electrical…