Experimentally detecting dynamical quantum phase transitions in a slowly quenched Ising-chain model

被引：7

作者：

Chen, Zhe ^{[1
,2
]}

Cui, Jin-Ming ^{[1
,2
]}

Ai, Ming-Zhong ^{[1
,2
]}

He, Ran ^{[1
,2
]}

Huang, Yun-Feng ^{[1
,2
]}

Han, Yong-Jian ^{[1
,2
]}

Li, Chuan-Feng ^{[1
,2
]}

Guo, Guang-Can ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phy, Hefei 230026, Peoples R China

来源：

PHYSICAL REVIEW A | 2020年 / 102卷 / 04期

基金：

中国国家自然科学基金;

关键词：

SIMULATIONS;

D O I：

10.1103/PhysRevA.102.042222

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently, research on nonequilibrium dynamics sparked a great amount of topics. One of particular concern is the dynamical quantum phase transition in quenched systems. In this work, we experimentally simulated the slow quenches in a quantum transverse-field Ising model crossing two quantum critical points. We studied the relationship between the appearance of the dynamical quantum phase transition and the quench rate, using the discontinuity of the dynamical topological order parameter (DTOP). In addition, an oscillation of the DTOP is also observed in our experiment. These results provide more insight into the topological aspect of the nonequilibrium dynamics.

引用

页数：9

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