Experimental Observation of a Time-Driven Phase Transition in Quantum Chaos

被引：20

作者：

Hainaut, Clement ^{[1
]}

Fang, Ping ^{[2
,3
,4
]}

Rancon, Adam ^{[1
]}

Clement, Jean-Francois ^{[1
]}

Szriftgiser, Pascal ^{[1
]}

Garreau, Jean-Claude ^{[1
]}

Tian, Chushun ^{[1
,3
,4
]}

Chicireanu, Radu ^{[1
,3
,4
]}

机构：

[1] Univ Lille, CNRS, UMR PhLAM Lab Phys Lasers Atomes Mol 8523, F-59000 Lille, France

[2] Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China

[3] Chinese Acad Sci, CAS Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China

[4] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 13期

基金：

中国国家自然科学基金;

关键词：

LOCALIZATION;

D O I：

10.1103/PhysRevLett.121.134101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first experimental observation of the time-driven phase transition in a canonical quantum chaotic system, the quantum kicked rotor. The transition bears a firm analogy to a thermodynamic phase transition, with the time mimicking the temperature and the quantum expectation of the rotor's kinetic energy mimicking the free energy. The transition signals a sudden change in the system's memory behavior: before the critical time, the system undergoes chaotic motion in phase space and its memory of initial states is erased in the course of time; after the critical time, quantum interference enhances the probability for a chaotic trajectory to return to the initial state, and thus the system's memory is recovered.

引用

页数：6

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