Mesoscopic quantum reality in the light of new technologies

薛定谔猫无视宏观现实的证据已经出现在几个原子，离子或光子的系统中，导致2012年诺贝尔物理学奖。然而，量子科学技术的发展使得这些状态在越来越多的介观水平上可以通过实验获得。本计画将发展一套理论，以实验来检验介观的真实性、非定域性与退相干性，并以冷原子与离子阱系统为重点。本计画将以贝尔定理、爱因斯坦-波多尔斯基-罗森佯谬及薛定谔量子导引理论为基础，研究多体非定域性。除了具有基本意义外，这些演示对于计量学，安全量子密码学和超灵敏探测器都有潜在的用处。

Evidence for the Schrodinger cat that defies macroscopic reality has emerged for systems of several atoms, ions or photons, resulting in a Nobel award in physics in 2012. However, developments in quantum science technology make these states experimentally accessible at an increasingly mesoscopic level. This project will develop a theory to test mesoscopic realism, nonlocality and decoherence in experiment, focusing on cold atom and ion trap systems. This project will study multipartite nonlocality based on Bell's theorem, the Einstein-Podolsky-Rosen paradox and Schrodinger's quantum steering. As well as having fundamental significance, these demonstrations are potentially useful for metrology, secure quantum cryptography and ultra-sensitive detectors.