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The study of the Unruh effect naturally raises the interest for a deeper understanding of the analogy between temperature and acceleration. A recurring question is whether an accelerated frame can be distinguished from an inertial thermal…

High Energy Physics - Theory · Physics 2020-07-01 A. P. C. M. Lima , G. Alencar , R. R. Landim

We present a detailed study of the entanglement dynamics of a two-qubit system coupled to independent non-Markovian environments, employing hierarchy equations. This recently developed theoretical treatment can conveniently solve…

Quantum Physics · Physics 2015-05-20 Hao-Tian Wang , Chuan-Feng Li , Yang Zou , Rong-Chun Ge , Guang-Can Guo

The relation between the dynamical regimes (weak and strong coupling) and entanglement for a dissipative quantum - dot microcavity system is studied. In the framework of a phenomenological temperature model an analysis in both, temporal…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Carlos A. Vera , Nicolas Quesada M. , Herbert Vinck-Posada , Boris A. Rodriguez

Two defect particles that couple to a harmonic chain, acting as common reservoir, can become entangled even when the two defects do not directly interact and the harmonic chain is effectively a thermal reservoir for each individual defect.…

Quantum Physics · Physics 2012-04-17 Endre Kajari , Alexander Wolf , Eric Lutz , Giovanna Morigi

We discuss the creation of entanglement between two two-level atoms in the dissipative process of spontaneous emission. It is shown that spontaneous emission can lead to a transient entanglement between the atoms even if the atoms were…

Quantum Physics · Physics 2009-11-10 R Tanas , Z. Ficek

We study the entanglement between the internal electronic and the external vibrational degrees of freedom of a trapped atom which is driven by two lasers into electromagnetically-induced transparency. It is shown that basic features of the…

Quantum Physics · Physics 2011-01-31 Maryam Roghani , Hanspeter Helm , Heinz-Peter Breuer

We investigate the entanglement dynamics for a quantum system composed of two uniformly accelerated Unruh-DeWitt detectors in different spacetime dimensions. It is found that the range of parameters in which entanglement can be generated is…

General Relativity and Quantum Cosmology · Physics 2022-10-12 Jiatong Yan , Baocheng Zhang

The creation and destruction of entanglement between a pair of interacting two-level detectors accelerating about diametrically opposite points of a circular path is investigated. It is found that any non-zero acceleration has the effect of…

Quantum Physics · Physics 2011-02-01 Jason Doukas , Benedict Carson

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…

Quantum Physics · Physics 2016-07-04 Alireza Nourmandipour , M. K. Tavassoly

We consider the entanglement dynamics between two-level atoms in a rotating black hole background. In our model the two-atom system is envisaged as an open system coupled with a massless scalar field prepared in one of the physical vacuum…

General Relativity and Quantum Cosmology · Physics 2018-05-09 G. Menezes

We demonstrate the difference between local, single-particle dynamics and global dynamics of entangled quantum systems coupled to independent environments. Using an all-optical experimental setup, we show that, while the environment-induced…

We determine and study the steady state of two independent two-level systems weakly coupled to a stationary non-equilibrium environment. Whereas this bipartite state is necessarily uncorrelated if the splitting energies of the two-level…

Quantum Physics · Physics 2015-05-28 S. Camalet

We study the exact entanglement dynamics of two qubits in a common structured reservoir. We demonstrate that, for certain classes of entangled states, entanglement sudden death occurs, while for certain initially factorized states,…

Quantum Physics · Physics 2009-11-13 L. Mazzola , S. Maniscalco , J. Piilo , K. -A. Suominen , B. M. Garraway

We study the collective dynamics of accelerated atoms interacting with a massless field via an Unruh-deWitt-type interaction. We first derive a general Hamiltonian describing such a system and then, employing a Markovian master equation, we…

Quantum Physics · Physics 2017-11-10 Benedikt Richter , Hugo Terças , Yasser Omar , Inés de Vega

When atoms are accelerated in the vacuum, entanglement among atoms will degrade compared with the initial situation before the acceleration. In this paper, we propose a novel and interesting view that the lost entanglement can be recovered…

High Energy Physics - Theory · Physics 2024-05-20 Jiatong Yan , Baocheng Zhang , Qingyu Cai

In the framework of the theory of open systems based on completely positive quantum dynamical semigroups, we give a description of the dynamics of entanglement for a system consisting of two uncoupled harmonic oscillators interacting with a…

Quantum Physics · Physics 2015-05-27 Aurelian Isar

We study the non-Markovian effects on the dynamics of entanglement in an exactly-solvable model that involves two independent oscillators each coupled to its own stochastic noise source. First, we develop Lie algebraic and functional…

Statistical Mechanics · Physics 2012-05-23 Justin H. Wilson , Benjamin M. Fregoso , Victor M. Galitski

We demonstrate an exact mapping of a class of models of two interacting qubits in thermal reservoirs to two separate spin-bath problems. Based on this mapping, exact numerical simulations of the qubits dynamics can be performed, beyond the…

Quantum Physics · Physics 2015-06-05 Lian-Ao Wu , Claire X. Yu , Dvira Segal

We review the standard treatment of open quantum systems in relation to quantum entanglement, analyzing, in particular, the behaviour of bipartite systems immersed in a same environment. We first focus upon the notion of complete…

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

The dynamical evolution of entanglement between two polarizable two-level atoms in weak interaction with electromagnetic vacuum fluctuations is investigated. We find that, for initial Bell state $\psi^{\pm}$, the decay rate of entanglement…

Quantum Physics · Physics 2017-07-25 Anwei Zhang
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