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We investigate the process of entanglement transfer from a three-mode quantized field to a system of three spatially separated qubits each one made of a two-level atom resonantly coupled to a cavity mode. The optimal conditions for…

量子物理 · 物理学 2009-11-13 Federico Casagrande , Alfredo Lulli , Matteo G. A. Paris

A theoretical model for driving a two qubit system to a stable long-lived entanglement is discussed. The entire system is represented by two atoms, initially in ground states and disentangled, each one coupled to a separate cavity with the…

量子物理 · 物理学 2012-04-26 Vitalie Eremeev , Víctor Montenegro , Miguel Orszag

We consider two qubits prepared in a product state and evolved under the magnetic dipolar interaction (MDI). We describe the dependence of the entanglement generated by the MDI with time, with the interaction parameters, and with the…

量子物理 · 物理学 2018-08-21 Douglas F. Pinto , Jonas Maziero

In this paper we provide an analytical investigation of the entanglement dynamics of moving qubits dissipating into a common and (in general) non-Markovian environment for both weak and strong coupling regimes. We first consider the case of…

量子物理 · 物理学 2020-02-19 Sare Golkar , Mohammad K Tavassoly , Alireza Nourmandipour

We study the dynamics of two qubits separately sent through two coupled resonators, each initially containing a coherent state field. We present analytical arguments and numerical calculations for the qubit-field system under different…

量子物理 · 物理学 2015-06-18 Li-Tuo Shen , Rong-Xin Chen , Huai-Zhi Wu , Zhen-Biao Yang

The ability to create and harness entanglement is crucial to the fields of quantum sensing and simulation, and ultracold atom-cavity systems offer pristine platforms for this undertaking. Here, we present a method for creating and…

Quantum entanglement is usually considered a fragile quantity and decoherence through coupling to an external environment, such as a thermal reservoir, can quickly destroy the entanglement resource. This doesn't have to be the case and the…

A pair of two level atoms A1A2, prepared either in a separable state or in an entangled state, interacts with a single mode of two mode squeezed cavity field while a third atomic qubit B interacts with the second mode of the squeezed field…

量子物理 · 物理学 2013-05-03 Paulo Jose dos Reis , S. Shelly Sharma , N. K. Sharma

We analyze the dynamics of the quantum Rabi model for two qubits interacting through a common bosonic field mode (resonator), focusing on the generation and detection of maximally entangled Bell states. We obtain analytical results for the…

量子物理 · 物理学 2016-11-15 Matteo Bina , Stefano Maffezzoli Felis , Stefano Olivares

The entanglement dynamics of two independent qubits each embedded in a structured environment under conditions of inhibition of spontaneous emission is analyzed, showing entanglement trapping. We demonstrate that entanglement trapping can…

量子物理 · 物理学 2010-03-30 Bruno Bellomo , Rosario Lo Franco , Sabrina Maniscalco , Giuseppe Compagno

The dynamics of entanglement and quantum discord for qubit-qutrit systems are studied in the presence of phase damping and amplitude damping noises. Both one way and two couplings of the marginal systems with the environments are…

量子物理 · 物理学 2016-12-22 Salman Khan , Ishaq Ahmad

We analyze rigorously the dynamics of the entanglement between two qubits which interact only through collective and local environments. Our approach is based on the resonance perturbation theory which assumes a small interaction between…

量子物理 · 物理学 2010-01-08 M. Merkli , G. P. Berman , F. Borgonovi , K. Gebresellasie

The generation of entanglement is studied in a minimal model consisting of two independent Gaussian parties embedded in a common heat bath and subject to local control signals. Neither the reservoir alone nor the external driving can induce…

量子物理 · 物理学 2014-12-22 Rebecca Schmidt , Jürgen T. Stockburger , Joachim Ankerhold

The generation and preservation of entanglement is a central goal in quantum technology. Traditionally, dissipation in quantum systems is thought to be detrimental to entanglement, however dissipation can also be utilised as a means of…

量子物理 · 物理学 2024-05-20 Josephine Dias , Christopher W. Wächtler , Kae Nemoto , William J. Munro

Recently, a sufficient condition on the structure of the Kossakowski-Lindblad master equation has been given such that the generated reduced dynamics of two qubits results entangling for at least one among their initial separable pure…

量子物理 · 物理学 2009-11-13 Fabio Benatti , Alexandra M. Liguori , Adam Nagy

The entanglement dynamics of a laser-pumped two-level quantum dot pair is investigated in the steady-state. The closely spaced two-level emitters, embedded in a semiconductor substrate, interact with both the environmental vacuum modes of…

量子物理 · 物理学 2018-05-09 Elena Cecoi , Viorel Ciornea , Aurelian Isar , Mihai A. Macovei

We study the entanglement dynamics of two qubits, each of which is embedded into its local amplitude-damping reservoir, and the entanglement distribution among all the bipartite subsystems including qubit-qubit, qubit-reservoir, and…

量子物理 · 物理学 2011-08-26 Qing-Jun Tong , Jun-Hong An , Hong-Gang Luo , C. H. Oh

We present an optomechanical model to show that entanglement can be a sufficient condition for quantum synchronization of two mechanical oscillators. As both these entities can be characterized in terms of variances of a set of EPR-like…

量子物理 · 物理学 2023-05-05 Manju , Shubhrangshu Dasgupta , Asoka Biswas

The quantum dynamics of two weakly coupled nonlinear oscillators is analytically and numerically investigated in the context of nonlinear dissipation. The latter facilitates the creation and preservation of non-classical steady states.…

量子物理 · 物理学 2013-08-09 Aurora Voje , Andreas Isacsson , Alexander Croy

We study the exact entanglement dynamics of two atoms in a lossy resonator. Besides discussing the steady-state entanglement, we show that in the strong coupling regime the system-reservoir correlations induce entanglement revivals and…