Decoherence and Entanglement in Two-mode Squeezed Vacuum States

Abstract

I investigate the decoherence of two-mode squeezed vacuum states by analyzing the relative entropy of entanglement. I consider two sources of decoherence: (i) the phase damping and (ii) the amplitude damping due to the coupling to the thermal environment. In particular, I give the exact value of the relative entropy of entanglement for the phase damping model. For the amplitude damping model, I give an upper bound for the relative entropy of entanglement, which turns out to be a good approximation for the entanglement measure in usual experimental situations.

5 pages, RevTex, 3 eps figures

References in corpus (6)

• Peres-Horodecki separability criterion for continuous variable systems
• Inseparability criterion for continuous variable systems
• Continuous-variable teleportation improvement by photon subtraction via conditional measurement
• Entanglement purification of Gaussian continuous variable quantum states
• Dynamics of Nonlocality for A Two-Mode Squeezed State in Thermal Environment
• Physical implementation for entanglement purification of Gaussian continuous variable quantum states

Cited by in corpus (26)

• Extremal entanglement and mixedness in continuous variable systems
• Markovian Master Equations: A Critical Study
• Entanglement and purity of two-mode Gaussian states in noisy channels
• Quantifying decoherence in continuous variable systems
• Non-Markovian entanglement dynamics of quantum continuous variable systems in thermal environments
• Tensionless Strings from Worldsheet Symmetries
• Bridging entanglement dynamics and chaos in semiclassical systems
• Entanglement generation and degradation by passive optical devices
• Origin of the slow growth of entanglement entropy in long-range interacting spin systems
• Continuous variable entanglement dynamics in structured reservoirs
• Tuning entanglement by squeezing magnons in anisotropic magnets
• Determination of the Schmidt number
• Evolution of twin-beam in active optical media
• Simultaneous amplitude and phase damping of a kind of Gaussian states and their separability
• Detecting the inseparability and distillability of continuous variable states in Fock space
• Local observables for entanglement witnesses
• Quantum entanglement of decohered two-mode squeezed states in absorbing and amplifying environment
• Entanglement of pair cat states and teleportation
• Homodyne nonclassical area as a nonclassicality indicator
• Thermalization Dynamics of Entanglement and non-Locality of Filtered Two-Mode Squeezed States
• Entanglement, Squeezing and non-Locality in Filtered Two-Mode Squeezed Mixed States
• Lindblad dynamics of open multi-mode bosonic systems: Algebra of bilinear superoperators, exceptional points and speed of evolution
• Generalising multipartite concentratable entanglement for practical applications: mixed, qudit, and optical states
• Inspecting non-perturbative contributions to the Entanglement Entropy via wavefunctions
• Entanglement dynamics for two harmonic oscillators coupled to independent environments
• Higher-order properties and Bell-inequality violation for the three-mode enhanced squeezed state