88 citations · 218 across the 17 of their papers we have counts for
6 papers · 1 filter
Information-disturbance tradeoff in sending Direction information via antiparallel quantum spin
ShengLi Zhang, XuBo Zou, ChuanFeng Li +2
For sending unknown direction information, antiparallel spins contains more direction information than parallel spins(Gisin and Popescu, 1999, \textit{Phys. Rev. Lett.} 83, 432).In…
Multipartite continuous-variable entanglement distillation using local squeezing and only one photon-subtraction operation
Song Yang, XuBo Zou, ShengLi Zhang +3
In this paper, we study entanglement distillation of multipartite continuous-variable Gaussian entangled states. Following Opatrný \emph{et al.}'s photon subtraction (PS) scheme, t…
Local Gaussian operations can enhance continuous-variable entanglement distillation
ShengLi Zhang, Peter van Loock
Entanglement distillation is a fundamental building block in long-distance quantum communication. Though known to be useless on their own for distilling Gaussian entangled states,…
Distillation of mixed-state continuous-variable entanglement by photon subtraction
ShengLi Zhang, Peter van Loock
We present a detailed theoretical analysis for the distillation of one copy of a mixed two-mode continuous-variable entangled state using beamsplitters and coherent photon-detectio…
Covariant feedback Control of arbitrary qudit state against Depolarizing Noise is impossible
ShengLi Zhang, XuBo Zou, Chuanfeng Li +2
In this paper, we prove that it is impossible to construct a convariant quantum feedback control instruments which aim to correct the channel noise imposed on an unknown qubit. The…
Closing the gap of secure quantum key rate with the Heralded Pair-Coherent States
ShengLi Zhang, XuBo Zou, ChenHui Jin +1
In this paper, we investigate the long-standing gap of quantum key rate between the Weak Coherent Pulse (WCP) and Heralded Single Photon Sources(HSPS) implementation of quantum cry…