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We study the quantum Rabi model for a two-level system coupled to a quantized cavity mode under periodic modulation of the cavity-dipole coupling in the ultrastrong coupling regime, leading to rich Floquet states. As an application of the…

Quantum Physics · Physics 2025-02-13 Kamran Akbari , Franco Nori , Stephen Hughes

We investigate the multiphoton quantum dynamics of a leaking single-mode quantized cavity field coupled with a resonantly driven two-level system possessing permanent dipoles. The frequencies of the interacting subsystems are being…

Quantum Physics · Physics 2021-04-27 Alexandra Mirzac , Sergiu Carlig , Mihai A. Macovei

We analyse here the pseudo-Hermitian Dynamical Casimir effect, proposing a non-Hermitian version of the effective Law's Hamiltonian used to describe the phenomenon. We verify that the average number of created photons can be substantially…

Quantum Physics · Physics 2022-03-02 D. Cius , F. M. Andrade , A. S. M. de Castro , M. H. Y. Moussa

We study the ground state phase diagram of a nonlinear two-photon Rabi-Hubbard (RH) model in one dimension using quantum Monte Carlo (QMC) simulations and density matrix renormalization group (DMRG) calculations. Our model includes a…

Quantum Gases · Physics 2020-09-30 Shifeng Cui , B. Grémaud , Wenan Guo , G. G. Batrouni

The density matrix equations of motion in near-degenerate three-level V-type closed-loop atomic system are calculated numerically in Floquet frame. The dynamical behavior of atom- photon entanglement between the dressed atom and its…

Atomic and Molecular Clusters · Physics 2015-07-01 Zeinab Kordi , Saeed Ghanbari , Mohammad Mahmoudi

The thermoelectric effect in a quantum dot system connected to two electron reservoirs in the presence of a photon cavity is investigated using a quantum master equation in the steady-state regime. If a quantized photon field is applied to…

Mesoscale and Nanoscale Physics · Physics 2019-05-21 Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

In the early stage of ultrarelativistic heavy-ion collisions chiral symmetry is restored temporarily. During this so-called chiral phase transition, the quark masses change from their constituent to their bare values. This mass shift leads…

Nuclear Theory · Physics 2013-07-02 Frank Michler , Hendrik van Hees , Dennis D. Dietrich , Stefan Leupold , Carsten Greiner

We have generalized Einstein coefficients and rate equations from quantum field theoretic point of view by bringing the fundamental processes and the quantum Rabi oscillation in a single footing for the light-matter interactions for nonzero…

Quantum Physics · Physics 2022-10-11 Najirul Islam , Shyamal Biswas

In this paper, we show how to generate the multiple single-photon wavepackets of arbitrary temporal shape from an optical cavity coupled with $N$ three-level atoms driven by a driving field in the non-Markovian regime. We derive an exact…

Quantum Physics · Physics 2024-04-16 H. Z. Shen , Y. Chen , T. Z. Luan , X. X. Yi

We report a theoretical investigation of photoionization by a pair of coherent, ultrashort fundamental and second-harmonic extreme-ultraviolet pulses, where the photon energies are selected to yield the same photoelectron energy for…

Atomic Physics · Physics 2023-11-27 Kenichi L. Ishikawa , Kevin C. Prince , Kiyoshi Ueda

We investigate the quantum-to-classical crossover of a dissipative optical cavity mode based on measurement of the correlations between two atoms which do not interact with each other, but interact with the cavity mode. Firstly, we note…

Quantum Physics · Physics 2011-12-06 D. Z. Rossatto , T. Werlang , E. I. Duzzioni , C. J. Villas-Boas

We study the properties of photons in a cryogenic cavity, made by cryo-cooled mirrors surrounded by a room temperature environment. We model such a system as a multimode cavity coupled to two thermal reservoirs at different temperatures.…

We propose an approach to simultaneously excite two atoms by using cavity-assisted Raman process in combination with cavity photon-mediated interaction. The system consists of a two-level atom and a $\Lambda$-type or V-type three-level…

Quantum Physics · Physics 2020-04-24 Peng Zhao , Xinsheng Tan , Haifeng Yu , Shi-Liang Zhu , Yang Yu

Both hot QCD matter and extremely strong electromagnetic fields are generated in relativistic heavy-ion collisions. We employ the transport model and the equivalent photon approximation (EPA) to study charmonium hadroproduction and…

Nuclear Theory · Physics 2024-11-20 Shuhan Zheng , Jiamin Liu , Shiqi Zheng , Jiaxing Zhao , Baoyi Chen

In this work, we examine particle creation and the evaporation process in the context of Kalb-Ramond gravity. Specifically, we build upon two existing solutions from the literature [1] (Model I) and [2] (Model II), both addressing a static,…

General Relativity and Quantum Cosmology · Physics 2025-05-01 A. A. Araújo Filho

We put forward a dissipative preparation scheme for strongly correlated photon states. Our approach is based on a two-photon loss mechanism that is realised via a single four-level atom inside a bimodal optical cavity. Each elementary…

Quantum Physics · Physics 2015-06-03 Martin Kiffner , Uwe Dorner , Dieter Jaksch

Considering ultracold atoms traversing a high-Q Fabry-Perot cavity, we theoretically demonstrate a quantum nondemolition measurement of the photon number. This fully quantum mechanical approach may be understood utilizing concepts as…

Quantum Physics · Physics 2009-11-13 Jonas Larson , Mahmoud Abdel-Aty

We report an investigation to establish the physical mechanisms responsible for decoherence in the generation of photon pairs from atomic ensembles, via the protocol of Duan et. al for long distance quantum communication [Nature (London)…

Quantum Physics · Physics 2009-11-11 D. Felinto , C. W. Chou , H. de Riedmatten , S. V. Polyakov , H. J. Kimble

We propose a cavity-QED scheme for the controlled generation of sequences of entangled single-photon wavepackets. A photon is created inside a cavity via an active medium, such as an atom, and decays into the continuum of radiation modes…

Quantum Physics · Physics 2009-10-31 K. M. Gheri , C. Saavedra , P. Toermae , J. I. Cirac , P. Zoller

The development, characterization and control of $N$-photon sources are instrumental for quantum technological applications. This work constitutes a step forward in this direction, where we propose a cavity quantum electrodynamics setup…