Entanglement dynamics of two-bipartite system under the influence of dissipative environments

2010/03/31 by Smail Bougouffa
Computer Science · Mathematics · Physics and Astronomy · #Bipartite graph #Computer science #Concurrence #Dissipative system #Logarithm #Mathematical analysis #Mathematics #Measure (data warehouse) #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Statistical physics #Sudden death #W state #quant-ph

paper · pdf · doi:10.1016/j.optcom.2010.03.029

published as Optics Communications 283 (2010) 2989-2996 · 21 pages, 13 figures

openalex publication_date 2010/03/31 · arxiv created 2010/11/01 · arxiv updated 2011/07/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

An experimental scheme is suggested that permits a direct measure of entanglement in a two-qubit cavity system. It is realized in the cavity-QED technology utilizing atoms as flying qubits. With this scheme we generate two different measures of entanglement, namely logarithmic negativity and concurrence. The phenomenon of sudden death entanglement (ESD) in a bipartite system subjected to dissipative environment is examined. We show that the sudden death time of the entangled states depends on the initial preparation of the entangled state and the temperature of the reservoir.

Citations

• Experimental quantum teleportation
• Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons
• Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels
• Single observable concurrence measurement without simultaneous copies
• Exact master equation and quantum decoherence of two coupled harmonic oscillators in a general environment
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Quantum Open System Theory: Bipartite Aspects
• Finite-Time Disentanglement Via Spontaneous Emission
• Separability Criterion for Density Matrices
• Entanglement measurement based on two-particle interference
• Causality, Randomness, and the Microwave Background
• Quantum cryptography based on Bell’s theorem
• Entangling two atoms via spontaneous emission
• Sudden Birth versus Sudden Death of Entanglement in Multipartite Systems
• Unconditional Quantum Teleportation
• Experimental Realization of Teleporting an Unknown Pure Quantum State via Dual Classical and Einstein-Podolsky-Rosen Channels
• Separability of mixed states: necessary and sufficient conditions
• Dark periods and revivals of entanglement in a two-qubit system