Entanglement Dynamics of Two Independent Cavity-Embedded Quantum Dots

Abstract

We investigate the dynamical behavior of entanglement in a system made by two solid-state emitters, as two quantum dots, embedded in two separated micro-cavities. In these solid-state systems, in addition to the coupling with the cavity mode, the emitter is coupled to a continuum of leaky modes providing additional losses and it is also subject to a phonon-induced pure dephasing mechanism. We model this physical configuration as a multipartite system composed by two independent parts each containing a qubit embedded in a single-mode cavity, exposed to cavity losses, spontaneous emission and pure dephasing. We study the time evolution of entanglement of this multipartite open system finally applying this theoretical framework to the case of currently available solid-state quantum dots in micro-cavities.

10 pages, 4 figures, to appear in Topical Issue of Physica Scripta on proceedings of CEWQO 2010

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Cited by in corpus (12)

• Dynamics of quantum correlations in two-qubit systems within non-Markovian environments
• Distributed correlations and information flows within a hybrid multipartite quantum-classical system
• Entanglement dynamics in superconducting qubits affected by local bistable impurities
• Relations between entanglement and purity in non-Markovian dynamics
• Simple Non-Markovian Microscopic Models for the Depolarizing Channel of a Single Qubit
• Overview on the phenomenon of two-qubit entanglement revivals in classical environments
• Entanglement instability in the interaction of two qubits with a common non-Markovian environment
• Robust construction of entangled coherent GHZ and W states in a cavity QED system
• Entanglement increase from local interaction in the absence of initial quantum correlation in the environment and between the system and the environment
• Positivity of the assignment map implies complete positivity of the reduced dynamics
• Frozen discord in stochastic dephasing environment
• Time evolution of quantum correlations in presence of state dependent bath