Observation of discrete time-crystalline order in a disordered dipolar many-body system
Research output: Contribution to journal › Article › peer-review
Authors
Colleges, School and Institutes
External organisations
- HARVARD UNIVERSITY
- Tsukuba University
- Universität Ulm
- National Institutes for Quantum and Radiological Science and Technology
- Sumitomo Electric Industries Ltd
- UC Berkeley
Abstract
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. 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; for example, the interplay between periodic driving, disorder and strong interactions has been predicted to result in exotic 'time-crystalline' phases, 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. 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. 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. Our work opens the door to exploring dynamical phases of matter and controlling interacting, disordered many-body systems.
Details
Original language | English |
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Pages (from-to) | 221-225 |
Number of pages | 5 |
Journal | Nature |
Volume | 543 |
Issue number | 7644 |
Publication status | Published - 8 Mar 2017 |
Keywords
- Phase transitions and critical phenomena, Quantum simulation, Quantum information