Observation of quantum strong Mpemba effect

被引：4

作者：

Zhang, Jie ^{[1
,2
,3
]}

Xia, Gang ^{[1
]}

Wu, Chun-Wang ^{[1
,2
,3
]}

Chen, Ting ^{[1
,2
,3
]}

Zhang, Qian ^{[4
]}

Xie, Yi ^{[1
,2
,3
]}

Su, Wen-Bo ^{[1
]}

Wu, Wei ^{[1
,2
,3
]}

Qiu, Cheng-Wei ^{[5
]}

Chen, Ping-Xing ^{[1
,2
,3
]}

Li, Weibin ^{[6
,7
]}

Jing, Hui ^{[4
,8
]}

Zhou, Yan-Li ^{[1
,2
,3
]}

机构：

[1] Natl Univ Def Technol, Inst Quantum Sci & Technol, Coll Sci, Changsha, Peoples R China

[2] Hunan Key Lab Mech & Technol Quantum Informat, Changsha, Peoples R China

[3] Hefei Natl Lab, Hefei, Anhui, Peoples R China

[4] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contro, Minist Educ, Changsha, Peoples R China

[5] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore, Singapore

[6] Univ Nottingham, Sch Phys & Astron, Nottingham, England

[7] Univ Nottingham, Ctr Math &Theoret Phys Quantum Nonequilibrium Syst, Nottingham, England

[8] Natl Univ Def Technol, Coll Sci, Changsha, Peoples R China

来源：

NATURE COMMUNICATIONS | 2025年 / 16卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

D O I：

10.1038/s41467-024-54303-0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

An ancient and counterintuitive phenomenon known as the Mpemba effect (water can cool faster when initially heated up) showcases the critical role of initial conditions in relaxation processes. How to realize and utilize this effect for speeding up relaxation is an important but challenging task in purely quantum system till now. Here, we experimentally study the strong Mpemba effect in a single trapped ion system in which an exponentially accelerated relaxation in time is observed by preparing an optimal quantum initial state with no excitation of the slowest decaying mode. Also, we demonstrate that the condition of realizing such effect coincides with the Liouvillian exceptional point, featuring the coalescence of both the eigenvalues and the eigenmodes of the systems. Our work provides an efficient strategy to engineer the dynamics of open quantum system, and suggests a link unexplored yet between the Mpemba effect and the non-Hermitian physics.

引用

页数：7

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