34 citations · 151 across the 29 of their papers we have counts for
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quant-ph2011★ 27 cited
A characterization of optimal entanglement witnesses
Xiaofei Qi, Jinchuan Hou
In this paper, we present a characterization of optimal entanglement witnesses in terms of positive maps and then provide a general method of checking optimality of entanglement wi…
quant-ph2011
Fidelity of states in infinite dimensional quantum systems
Jinchuan Hou, Xiaofei Qi
In this paper we discuss the fidelity of states in infinite dimensional systems, give an elementary proof of the infinite dimensional version of Uhlmann's theorem, and then, apply…