基于一种七量子比特混态的四方量子操作分享

Four-party quantum operation sharing with 7-qubit mixing state

本文考虑七量子比特Brown态中两个量子比特发生混淆后的量子态作为量子通道,提出了一个四方量子操作分享方案.文中讨论了该方案的安全性、成功几率性、分享者对称性和实验可行性.研究发现,该方案是安全的,可确定性地分享任意单量子比特操作,三个分享者中有两者是对称的,根据当前实验技术该方案切实可行.将本文方案与目前仅有的四个四方量子操作分享方案进行了简单的比较,发现本文方案在量子通道和量子比特布居上都与它们的不同.值得一提的是,本文方案是首个基于量子纠缠混态的量子操作分享方案.

In this paper,a four-party quantum operation protocol is proposed using a 7-qubit mixing state,which originates from a 7-qubit Brown state due to a 2-qubit confusion.The security,determinacy,and sharer symmetry,as well as the experiment feasibility of the present protocol,are analyzed and discussed.Notably,the protocol is secure,a quantum operation can be shared by the sharer entity so that it can be successfully executed on a remote target qubit on one sharer’s side,two of the three sharers are symmetric as the reconstruction of the conceivable state is concerned,and the protocol is experimentally feasible in terms of the current technique.The present protocol is concisely compared with four 4-party quantum operation protocols,which are different from the employed quantum channel or the qubit distribution.The present protocol is the first to utilize the entangled mixing state as the quantum channel.