Journal article
Quantum synchronisation enabled by dynamical symmetries and dissipation
- Abstract:
- In nature, instances of synchronisation abound across a diverse range of environments. In the quantum regime, however, synchronisation is typically observed by identifying an appropriate parameter regime in a specific system. In this work we show that this need not be the case, identifying symmetry-based conditions which, when satisfied, guarantee completely synchronous, entangled limit cycles between the individual constituents of a generic open quantum system - no restrictions are placed on its microscopic details. We describe these systems as posssessing a strong dynamical symmetry and we prove that, to first order, they are completely robust to symmetry-breaking perturbations. Using these ideas we identify two central examples where synchronisation arises via this qualitatively new mechanism: a chain of quadratically dephased spin-1s and the many-body charge-dephased Hubbard model. In both cases, due to their dynamical symmetries, perfect phase-locking occurs throughout the system, regardless of the specific microscopic parameters or initial states. Furthermore, when these systems are perturbed, their non-linear responses elicit long-lived signatures of both phase and frequency-locking.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1012.8KB, Terms of use)
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- Publisher copy:
- 10.1088/1367-2630/ab60f5
Authors
- Publisher:
- IOP Publishing
- Journal:
- New Journal of Physics More from this journal
- Volume:
- 22
- Pages:
- 013026
- Publication date:
- 2019-12-11
- Acceptance date:
- 2019-12-11
- DOI:
- ISSN:
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1367-2630
- Keywords:
- Pubs id:
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pubs:1039609
- UUID:
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uuid:85fc7198-198d-465e-a915-5b3e3ed746fa
- Local pid:
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pubs:1039609
- Source identifiers:
-
1039609
- Deposit date:
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2020-01-09
Terms of use
- Copyright holder:
- Tindall et al
- Copyright date:
- 2019
- Notes:
- © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft and the Institute of Physics. As the Version of Record of this article is going to be/has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately.
- Licence:
- CC Attribution (CC BY)
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