Dynamics of entanglement for coherent excitonic states in a system of two coupled quantum dots and cavity QED

Abstract

The dynamics of the entanglement for coherent excitonic states in the system of two coupled large semiconductor quantum dots ($R/a_B\gg 1$) mediated by a single-mode cavity field is investigated. Maximally entangled coherent excitonic states can be generated by cavity field initially prepared in odd coherent state. The entanglement of the excitonic coherent states between two dots reaches maximum when no photon is detected in the cavity. The effects of the zero-temperature environment on the entanglement of excitonic coherent state are also studied using the concurrence for two subsystems of the excitons

arXiv comment7 pages, 6 figures

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• Entanglement dynamics in superconducting qubits affected by local bistable impurities
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• On the generation of multipartite entangled states in Josephson architectures
• Entangled Photon Pair Generation in Hybrid Superconductor-Semiconductor Quantum Dot Devices
• Measurement of Two-Qubit States by a Two-Island Single Electron Transistor
• Exciton entanglement in two coupled semiconductor microcrystallites
• Nonlinear coherent state of an exciton in a wide quantum dot
• Quantitative aspects of entanglement in the optically driven quantum dots
• Size-dependent decoherence of excitonic states in semiconductor microcrystallites
• Quantum Entanglement and Teleportation of Quantum-Dot States in Microcavities