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arxiv: 1402.0274 · v2 · pith:Y57TBVDCnew · submitted 2014-02-03 · 🪐 quant-ph

What bipartite states are lazy

classification 🪐 quant-ph
keywords lazystatebipartitesubsystemcalledconditioncouplingdirect
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A bipartite state is called lazy if the entropy rate of one subsystem is vanishing for any coupling to the other subsystem. In this paper, we provide a necessary and sufficient condition for a finite-dimensional bipartite state to be lazy, and prove that a two-mode Gaussian state is lazy if and only if it is a direct product state.

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