부산대학교 도서관

Summary: ``Entanglement is a fundamental feature of quantum physics anda key resource for quantum communication, computing, and sensing.Entangled states are fragile and maintaining coherence is a centralchallenge in quantum information processing. Nevertheless, entanglementcan be generated and stabilized through dissipative processes. In fact,entanglement has been shown to exist in the steady state of certaininteracting quantum systems subject solely to incoherent coupling tothermal baths. This has been demonstrated in a range of bi- andmultipartite settings using systems of finite dimension. Here we focuson the steady state of infinite-dimensional bosonic systems.Specifically, we consider any set of bosonic modes undergoingexcitation-number-preserving interactions of arbitrary strength anddivided between an arbitrary number of parties that each couple weaklyto thermal baths at different temperatures. We show that a uniquesteady state is always separable.''