Non-equilibrium quantum phase transition via entanglement decoherence dynamic

  • 林 昱辰

Student thesis: Master's Thesis

Abstract

We investigate the non-Markovian decoherence dynamics of continuous variable entanglement as the system-environment coupling strength varies from the weak-coupling regime into the strong-coupling regime Due to the existence of localized bound states in the strong-coupling regime the system remains in nonequilibrium and a nonequilibrium quantum phase transition occurs We analytically solve the entanglement decoherence dynamics for arbitrary spectral density The nonequilibrium quantum phase transition is demonstrated as the system-environment coupling strength varies for all the Ohmic-type spectral densities The entanglement quantum phase diagram is obtained
Date of Award2016 Jun 16
Original languageEnglish
SupervisorWei-Min Zhang (Supervisor)

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