Fractional time crystals

被引：36

作者：

Matus, Pawel ^{[1
]}

Sacha, Krzysztof ^{[1
,2
]}

机构：

[1] Uniwersytet Jagiellonski, Inst Fizyki, Ulica Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland

[2] Uniwersytet Jagiellonski, Mark Kac Complex Syst Res Ctr, Ulica Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland

来源：

PHYSICAL REVIEW A | 2019年 / 99卷 / 03期

关键词：

COLD ATOMS; MIRROR; REFLECTION; PHASE;

D O I：

10.1103/PhysRevA.99.033626

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Time crystals are quantum systems that are able to reveal condensed matter behavior in the time domain. It is known that crystallization in time can be observed in a periodically driven many-body system when interactions between particles force a system to evolve with a period that is an integer multiple of a driving period. This phenomenon is dubbed discrete time crystal formation. Here, we consider ultracold atoms bouncing on an oscillating atom mirror and show that the system can spontaneously form a discrete time crystal where the ratio of a period of its motion and a driving period is a rational number. This kind of discrete time crystal requires higher-order resonant driving, which is analyzed here with the help of an original approach.

引用

页数：10

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