119 citations · 286 across the 8 of their papers we have counts for
Showing 2006Show all
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quant-ph2006★ 15 cited
Discrimination between pure states and mixed states
Chi Zhang, Guoming Wang, Mingsheng Ying
In this paper, we discuss the problem of determining whether a quantum system is in a pure state, or in a mixed state. We apply two strategies to settle this problem: the unambiguo…
quant-ph2006★ 119 cited
Parameter estimation of quantum channels
Zhengfeng Ji, Guoming Wang, Runyao Duan +2
The efficiency of parameter estimation of quantum channels is studied in this paper. We introduce the concept of programmable parameters to the theory of estimation. It is found th…
quant-ph2006
Realization of positive-operator-valued measures by projective measurements without introducing ancillary dimensions
Guoming Wang, Mingsheng Ying
We propose a scheme that can realize a class of positive-operator-valued measures (POVMs) by performing a sequence of projective measurements on the original system, in the sense t…