双端面光学微腔中原子系综辅助混合体系的通用量子门。

Universal quantum gates for hybrid system assisted by atomic ensembles embedded in double-sided optical cavities.

机构信息

Shanxi Institute of Technology, Yangquan, Shanxi 045000, China.

School of Physics and Information Engineering, Shanxi Normal University, Linfen, Shanxi 041004, China.

出版信息

Sci Rep. 2017 Mar 8;7:43675. doi: 10.1038/srep43675.

DOI:10.1038/srep43675

PMID:28272548

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5341574/

Abstract

We propose deterministic schemes for controlled-NOT (CNOT), Toffoli, and Fredkin gates between flying photon qubits and the collective spin wave (magnon) of an atomic ensemble inside double-sided optical microcavities. All the gates can be accomplished with 100% success probability in principle and no additional qubit is required. Atomic ensemble is employed so that light-matter coupling is remarkably improved by collective enhancement. We qualified the performance of the gates and the results show that they can be faithfully constituted with current experimental techniques.

摘要

我们提出了在双面光学微腔中的飞光子量子比特与原子系综的集体自旋波（磁振子）之间实现受控-NOT（CNOT）、Toffoli 和 Fredkin 门的确定性方案。所有的门都可以在原则上以 100%的成功率来完成，且不需要额外的量子比特。使用原子系综可以通过集体增强显著提高光物质耦合。我们对门的性能进行了限定，结果表明它们可以用当前的实验技术来准确构建。