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Entanglement oscillation and survival induced by non-Markovian decoherence dynamics of entangled squeezed-state
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We study the exact decoherence dynamics of the entangled squeezed state of two single-mode optical fields interacting with two independent and uncorrelated environments. We analyze in detail the non-Markovian effects on the entanglement evolution of the initially entangled squeezed state for different environmental correlation time scales. We find that the environments have dual actions on the system: backaction and dissipation. In mparticular, when the environmental correlation time scale is comparable to the time scale for significant change in the system, the backaction would counteract the dissipative effect. Interestingly, this results in the survival of some residual entanglement in the final steady state.
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Environment-induced synchronization of two quantum oscillators
Two detuned quantum harmonic oscillators coupled to a common zero-temperature bosonic bath exhibit environment-induced frequency locking and, at stronger coupling, a regime of long-lived synchronized oscillations.
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