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Nonlinear isolated and coupled oscillators are extensively studied as prototypical nonlinear dynamics models. Much attention has been devoted to oscillator synchronization or the lack thereof. Here, we study the synchronization and…

斑图形成与孤子 · 物理学 2023-01-04 Golan Bel , Boian S. Alexandrov , Alan R. Bishop , Kim Ø. Rasmussen

We study the entanglement dynamics and relaxation properties of a system of two interacting qubits in the two cases (I) two independent bosonic baths and (II) one common bath, at temperature T. The entanglement dynamics is studied in terms…

量子物理 · 物理学 2017-05-10 G. Campagnano , A. Hamma , U. Weiss

We study the dynamics of entanglement transfer in a system composed of two initially correlated three-level atoms, each located in a cavity interacting with its own reservoir. Instead of tracing out reservoir modes to describe the dynamics…

量子物理 · 物理学 2015-05-19 C. E. López , G. Romero , J. C. Retamal

The dynamics of a system composed of two coupled optical cavities, each containing a single two-level atom, is studied over a wide range of detuning and coupling values. A description of the field in terms of delocalized modes reveals that…

量子物理 · 物理学 2009-11-13 C. D. Ogden , E. K. Irish , M. S. Kim

We study the time evolution of a superposition of product states of two dressed atoms in a spherical cavity in the situations of an arbitrarily large cavity (free space) and of a small one. In the large-cavity case, the system dissipates,…

量子物理 · 物理学 2015-05-18 E. R. Granhen , C. A. Linhares , A. P. C. Malbouisson , J. M. C. Malbouisson

We study the time evolution of the entanglement entropy in the short and long-range coupled harmonic oscillators that have well-defined continuum limit field theories. We first introduce a method to calculate the entanglement evolution in…

统计力学 · 物理学 2015-03-30 M. Ghasemi Nezhadhaghighi , M. A. Rajabpour

We study a single two-level atom interacting with a reservoir of modes defined by a reservoir structure function with a frequency gap. Using the pseudomodes technique, we derive the main features of a trapping state formed in the weak…

量子物理 · 物理学 2012-08-01 C. Lazarou , K. Luoma , S. Maniscalco , J. Piilo , B. M. Garraway

In this paper, we are interested in studying entropy and dynamics entanglement between a single time dependent three-level atom interacting with one-mode cavity field when the atomic motion is taken into account. An exact analytical…

量子物理 · 物理学 2022-09-29 Ahmed Salah , M. A. El-Sayed , N. H. Abdel Wahab

We studied entanglement entropy for a time dependent two dimensional holographic superconductor. We showed that the conserved charge of the system plays the role of the critical parameter to have condensation.

高能物理 - 理论 · 物理学 2018-04-11 N. S. Mazhari , D. Momeni , Kairat Myrzakulov , R. Myrzakulov

We investigate the dynamics of a two-level system in the presence of an overall environment composed of two layers. The first layer is just one single-mode cavity which decays to memoryless reservoir while the second layer is the two…

量子物理 · 物理学 2020-06-08 Kai Xu , Guo-Feng Zhang , Wu-Ming Liu

We investigate dynamics of an optomechanical system under the Non-Markovian environment. In the weak optomechanical single-photon coupling regime, we provide an analytical approach fully taking into account the non-Markovian memory effects.…

量子物理 · 物理学 2016-04-12 Jiong Cheng , Wen-Zhao Zhang , Ling Zhou , Weiping Zhang

We study the von Neumann entropy of the partial trace of a system of two two-level atoms (qubits) in a dispersive cavity where the atoms are interacting collectively with a single mode electromagnetic field in the cavity. We make a contrast…

量子物理 · 物理学 2021-10-01 Ram Narayan Deb

In this work we investigate the quantum dynamics of a model for two single-mode Bose--Einstein condensates which are coupled via Josephson tunneling. Using direct numerical diagonalisation of the Hamiltonian, we compute the time evolution…

量子物理 · 物理学 2009-11-10 A. P. Tonel , J. Links , A. Foerster

In this paper, the exact dynamics of open quantum systems in the presence of initial system-reservoir correlations is investigated for a photonic cavity system coupled to a general non-Markovian reservoir. The exact time-convolutionless…

量子物理 · 物理学 2015-05-20 Hua-Tang Tan , Wei-Min Zhang

We study two coupled discrete-time equations with different (asynchronous) periodic time scales. The coupling is of the type sample and hold, i.e., the state of each equation is sampled at its update times and held until it is read as an…

动力系统 · 数学 2019-07-04 Stefan Siegmund , Petr Stehlik

This paper is concerned with a set of novel coupling conditions for the $3\times 3$ one-dimensional Euler system with source terms at a junction of pipes with possibly different cross-sectional areas. Beside conservation of mass, we require…

偏微分方程分析 · 数学 2018-03-21 Jens Lang , Pascal Mindt

In this paper, we study the exact entanglement dynamics of two two-level atoms in a dissipative cavity. We use the Gardiner-Collett Hamiltonian to model the dissipative cavity, in which, we assume that the two atoms resonantly interact with…

量子物理 · 物理学 2016-07-04 Alireza Nourmandipour , M. K. Tavassoly

Entanglement properties of two uncoupled atoms embedded in a coherent field distribution through one quantum transition process is studied. A case of non-linear Hamiltonian of the problem is considered through which the effect of a…

量子物理 · 物理学 2010-03-16 M. S. Ateto

In this paper we extend current perspectives in engineering reservoirs by producing a time-dependent master equation leading to a nonstationary superposition equilibrium state that can be nonadiabatically controlled by the system-reservoir…

量子物理 · 物理学 2009-02-27 F. O. Prado , E. I. Duzzioni , M. H. Y. Moussa , N. G. de Almeida , C. J. Villas-Boas

In this paper, correlation dynamics for two two-level atoms distributed in two isolated thermal cavities are studied, where the atomic state is initially prepared in a maximum entangled zero-and-two-excitation superposition state. We use…

量子物理 · 物理学 2018-12-14 Rong-Can Yang , Lin Xin , Heng Ji , Hong-Yu Liu