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- W2051036032 abstract "Using the theory of open systems based on completely positive quantum dynamical semigroups, we describethe dynamics of entanglement for a system consisting of two uncoupled harmonic oscillators interacting with athermal reservoir. Using Peres-Simon necessary and sufficient criterion for separability of two-mode Gaussianstates, we describe the evolution of entanglement in terms of the covariance matrix for a Gaussian input state.For some values of the temperature of environment, the state keeps for all times its initial type - separableor entangled. In other cases, entanglement generation, entanglement sudden death or a repeated collapse andrevival of entanglement take place. We analyze also the time evolution of the logarithmic negativity, whichcharacterizes the degree of quantum entanglement." @default.
- W2051036032 created "2016-06-24" @default.
- W2051036032 creator A5046393595 @default.
- W2051036032 date "2009-09-17" @default.
- W2051036032 modified "2023-10-05" @default.
- W2051036032 title "Quantum entanglement of two-mode continuous variable states in a thermal reservoir" @default.
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- W2051036032 doi "https://doi.org/10.1117/12.862060" @default.
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