Discrete Time-Crystalline Order Enabled by Quantum Many-Body Scars: Entanglement Steering via Periodic Driving
Name
PhysRevLett.127.090602.pdf
Description
Published version
Size
1.62 MB
Format
Adobe PDF
Checksum (MD5)
1fb857749b8fb88006e4db0708a61ccc
Author(s)
Maskara, N
Michailidis, AA
Ho, WW
Bluvstein, D
Choi, S
Lukin, MD
Serbyn, M
Date Issued
2021
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Maskara, N, Michailidis, AA, Ho, WW, Bluvstein, D, Choi, S et al. 2021. "Discrete Time-Crystalline Order Enabled by Quantum Many-Body Scars: Entanglement Steering via Periodic Driving." Physical Review Letters, 127 (9).
Version
Final published version
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., arXiv:2012.12276) 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 (DTC) behavior in a prethermal regime. Unlike
conventional DTC, the subharmonic response exists only for Neel-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.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.127.090602
