Multiparticle quantum dynamics under real-time observation

被引：15

作者：

Ashida, Yuto ^{[1
]}

Ueda, Masahito ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan

[2] RIKEN, CEMS, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW A | 2017年 / 95卷 / 02期

基金：

日本学术振兴会;

关键词：

LOCALIZATION; COLLAPSE; FEEDBACK; MODELS;

D O I：

10.1103/PhysRevA.95.022124

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recent developments in quantum gas microscopy open up the possibility of real-time observation of quantum many-body systems. To understand the dynamics of atoms under such circumstances, we formulate the dynamics under a real-time spatially resolved measurement and show that, in an appropriate limit of weak spatial resolution and strong atom-light coupling, the measurement indistinguishability of particles results in complete suppression of relative positional decoherence. As a consequence, quantum correlation in the multiparticle dynamics persists under a minimally destructive observation. We numerically demonstrate this for ultracold atoms in an optical lattice. Our theoretical framework can be applied to the feedback control of quantum many-body systems which may be realized in subwavelength-spacing lattice systems.

引用

页数：9

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