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Title: Discrete Time-Crystalline Order Enabled by Quantum Many-Body Scars: Entanglement Steering via Periodic Driving

Abstract

The control of many-body quantum dynamics in complex systems is a key challenge in the quest to reliably produce and manipulate large-scale quantum entangled states. Recently, quench experiments in Rydberg atom arrays [Bluvstein et al. Science 371, 1355 (2021)] demonstrated that coherent revivals associated with quantum many-body scars can be stabilized by periodic driving, generating stable subharmonic responses over a wide parameter regime. We analyze a simple, related model where these phenomena originate from spatiotemporal ordering in an effective Floquet unitary, corresponding to discrete time-crystalline behavior in a prethermal regime. Unlike conventional discrete time crystals, the subharmonic response exists only for Néel-like initial states, associated with quantum scars. We predict robustness to perturbations and identify emergent timescales that could be observed in future experiments. Our results suggest a route to controlling entanglement in interacting quantum systems by combining periodic driving with many-body scars.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [1]; ORCiD logo [4];  [1]; ORCiD logo [2]
  1. Harvard Univ., Cambridge, MA (United States)
  2. Inst. of Science and Technology (IST) Austria, Klosterneuburg (Austria)
  3. Harvard Univ., Cambridge, MA (United States); Stanford Univ., CA (United States)
  4. Univ. of California, Berkeley, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
Publication Date:
Research Org.:
Harvard Univ., Cambridge, MA (United States); Krell Institute, Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); European Research Council (ERC); National University of Singapore (NUS); National Science Foundation (NSF)
OSTI Identifier:
1853702
Grant/Contract Number:  
SC0021013; SC0021110; AY2019/2020; DGE-1745303; 850899
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 127; Journal Issue: 9; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Physics; Eigenstate thermalization; Entanglement in quantum gases; Quantum quench; Quantum scars; Quantum simulation; Spontaneous symmetry breaking; Floquet systems

Citation Formats

Maskara, N., Michailidis, A.  A., Ho, W.  W., Bluvstein, D., Choi, S., Lukin, M.  D., and Serbyn, M. Discrete Time-Crystalline Order Enabled by Quantum Many-Body Scars: Entanglement Steering via Periodic Driving. United States: N. p., 2021. Web. doi:10.1103/physrevlett.127.090602.
Maskara, N., Michailidis, A.  A., Ho, W.  W., Bluvstein, D., Choi, S., Lukin, M.  D., & Serbyn, M. Discrete Time-Crystalline Order Enabled by Quantum Many-Body Scars: Entanglement Steering via Periodic Driving. United States. https://doi.org/10.1103/physrevlett.127.090602
Maskara, N., Michailidis, A.  A., Ho, W.  W., Bluvstein, D., Choi, S., Lukin, M.  D., and Serbyn, M. Fri . "Discrete Time-Crystalline Order Enabled by Quantum Many-Body Scars: Entanglement Steering via Periodic Driving". United States. https://doi.org/10.1103/physrevlett.127.090602. https://www.osti.gov/servlets/purl/1853702.
@article{osti_1853702,
title = {Discrete Time-Crystalline Order Enabled by Quantum Many-Body Scars: Entanglement Steering via Periodic Driving},
author = {Maskara, N. and Michailidis, A.  A. and Ho, W.  W. and Bluvstein, D. and Choi, S. and Lukin, M.  D. and Serbyn, M.},
abstractNote = {The control of many-body quantum dynamics in complex systems is a key challenge in the quest to reliably produce and manipulate large-scale quantum entangled states. Recently, quench experiments in Rydberg atom arrays [Bluvstein et al. Science 371, 1355 (2021)] demonstrated that coherent revivals associated with quantum many-body scars can be stabilized by periodic driving, generating stable subharmonic responses over a wide parameter regime. We analyze a simple, related model where these phenomena originate from spatiotemporal ordering in an effective Floquet unitary, corresponding to discrete time-crystalline behavior in a prethermal regime. Unlike conventional discrete time crystals, the subharmonic response exists only for Néel-like initial states, associated with quantum scars. We predict robustness to perturbations and identify emergent timescales that could be observed in future experiments. Our results suggest a route to controlling entanglement in interacting quantum systems by combining periodic driving with many-body scars.},
doi = {10.1103/physrevlett.127.090602},
journal = {Physical Review Letters},
number = 9,
volume = 127,
place = {United States},
year = {Fri Aug 27 00:00:00 EDT 2021},
month = {Fri Aug 27 00:00:00 EDT 2021}
}

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