通过原子自发辐射和腔衰减制备耦合腔中远距离原子的三维纠缠。

Preparation of three-dimensional entanglement for distant atoms in coupled cavities via atomic spontaneous emission and cavity decay.

作者信息

Su Shi-Lei, Shao Xiao-Qiang, Wang Hong-Fu, Zhang Shou

机构信息

1] Department of Physics, Harbin Institute of Technology, Harbin 150001, China [2] Department of Physics, College of Science, YanBian University, Yanji, Jilin 133002, China.

1] Centre for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, China [2] Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore, 117543.

出版信息

Sci Rep. 2014 Dec 19;4:7566. doi: 10.1038/srep07566.

DOI:10.1038/srep07566

PMID:25523944

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4271254/

Abstract

We propose a dissipative scheme to prepare a three-dimensional entangled state for two atoms trapped in separate coupled cavities. Our work shows that both atomic spontaneous emission and cavity decay, which are two typical obstacles in unitary-dynamics-based schemes, are no longer detrimental, but necessary for three-dimensional entangled state preparation without specifying initial state and controlling the evolution time precisely. Final numerical simulation with one group of experimental parameters indicates that the performance of our scheme could be better than the unitary-dynamics-based scheme.

摘要

我们提出了一种耗散方案，用于为捕获在单独耦合腔中的两个原子制备三维纠缠态。我们的工作表明，原子自发辐射和腔衰减这两个基于幺正动力学方案中的典型障碍，不再是有害的，而是在不指定初始状态和精确控制演化时间的情况下制备三维纠缠态所必需的。用一组实验参数进行的最终数值模拟表明，我们方案的性能可能优于基于幺正动力学的方案。