175 citations · 1.6k across the 65 of their papers we have counts for
6 papers · 2 filters
Distinguishing Arbitrary Multipartite Basis Unambiguously Using Local Operations and Classical Communication
Runyao Duan, Yuan Feng, Zhengfeng Ji +1
We show that an arbitrary basis of a multipartite quantum state space consisting of distant parties such that the th party has local dimension always contains at least…
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…
Majorization in Quantum Adiabatic Algorithms
Zhaohui Wei, Zhengfeng Ji, Mingsheng Ying
The majorization theory has been applied to analyze the mathematical structure of quantum algorithms. An empirical conclusion by numerical simulations obtained in the previous lite…
Optimal dense coding with arbitrary pure entangled states
Yuan Feng, Runyao Duan, Zhengfeng Ji
We examine dense coding with an arbitrary pure entangled state sharing between the sender and the receiver. Upper bounds on the average success probability in approximate dense cod…
Boundary effect of deterministic dense coding
Zhengfeng Ji, Yuan Feng, Runyao Duan +1
We present a rigorous proof of an interesting boundary effect of deterministic dense coding first observed by Mozes et al. [Phys. Rev. A 71, 012311 (2005)]. Namely, it is shown tha…
Identification and Distance Measures of Measurement Apparatus
Zhengfeng Ji, Yuan Feng, Runyao Duan +1
We propose simple schemes that can perfectly identify projective measurement apparatus secretly chosen from a finite set. Entanglements are used in these schemes both to make possi…