Observation of discrete time-crystalline order in a disordered dipolar many-body system

被引：847

作者：

Choi, Soonwon ^{[1
]}

Choi, Joonhee ^{[1
,2
]}

Landig, Renate ^{[1
]}

Kucsko, Georg ^{[1
]}

Zhou, Hengyun ^{[1
]}

Isoya, Junichi ^{[3
]}

Jelezko, Fedor ^{[4
,5
]}

Onoda, Shinobu ^{[6
]}

Sumiya, Hitoshi ^{[7
]}

Khemani, Vedika ^{[1
]}

von Keyserlingk, Curt ^{[8
]}

Yao, Norman Y. ^{[9
]}

Demler, Eugene ^{[1
]}

Lukin, Mikhail D. ^{[1
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[3] Univ Tsukuba, Res Ctr Knowledge Commun, Tsukuba, Ibaraki 3058550, Japan

[4] Univ Ulm, Inst Quantenopt, D-89081 Ulm, Germany

[5] Univ Ulm, Ctr Integrated Quantum Sci & Technol, D-89081 Ulm, Germany

[6] Takasaki Adv Radiat Res Inst, Natl Inst Quantum & Radiol Sci & Technol, 1233 Watanuki, Takasaki, Gunma 3701292, Japan

[7] Sumitomo Elect Ind Ltd, Itami, Hyogo 6640016, Japan

[8] Princeton Univ, Princeton Ctr Theoret Sci, Princeton, NJ 08544 USA

[9] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

NATURE | 2017年 / 543卷 / 7644期

基金：

日本学术振兴会; 美国国家科学基金会;

关键词：

LOCALIZATION; THERMALIZATION; ELECTRON; DIAMOND; SPIN;

D O I：

10.1038/nature21426

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：

Understanding quantum dynamics away from equilibrium is an outstanding challenge in the modern physical sciences. Out-of-equilibrium systems can display a rich variety of phenomena, including self-organized synchronization and dynamical phase transitions(1,2). More recently, advances in the controlled manipulation of isolated many-body systems have enabled detailed studies of non-equilibrium phases in strongly interacting quantum matter(3-6); for example, the interplay between periodic driving, disorder and strong interactions has been predicted to result in exotic 'time-crystalline' phases(7), in which a system exhibits temporal correlations at integer multiples of the fundamental driving period, breaking the discrete time-translational symmetry of the underlying drive(8-12). Here we report the experimental observation of such discrete time-crystalline order in a driven, disordered ensemble of about one million dipolar spin impurities in diamond at room temperature(13-15). We observe long-lived temporal correlations, experimentally identify the phase boundary and find that the temporal order is protected by strong interactions. This order is remarkably stable to perturbations, even in the presence of slow thermalization(16,17). Our work opens the door to exploring dynamical phases of matter and controlling interacting, disordered many-body systems(18-20).

引用

页码：221 / +

页数：8

共 31 条

[1] Exponentially Slow Heating in Periodically Driven Many-Body Systems [J].