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Emergence and control of complex behaviours in driven systems of interacting qubits with dissipation

journal contribution
posted on 09.11.2020, 11:38 by AV Andreev, Alexander Balanov, TM Fromhold, Mark Greenaway, AE Hramov, Weibin Li, VV Makarov, Alexandre Zagoskin
Progress in the creation of large scale, artificial quantum coherent structures demands the investigation of their nonequilibrium dynamics when strong interactions, even between remote parts, are non-perturbative. Analysis of multiparticle quantum correlations in a large system in the presence of decoherence and external driving is especially topical. Still, the scaling behaviour of dynamics and related emergent phenomena are not yet well understood. We investigate how the dynamics of a driven system of several quantum elements (e.g., qubits or Rydberg atoms) changes with increasing number of elements. Surprisingly, a two-element system exhibits chaotic behaviours. For larger system sizes a highly stochastic, far from equilibrium, hyperchaotic regime emerges. Its complexity systematically scales with the size of the system, proportionally to the number of elements. Finally, we demonstrate that these chaotic dynamics can be efficiently controlled by a periodic driving field. The insights provided by our result indicate the possibility of a reduced description for the behaviour of a large quantum system in terms of the transitions between its qualitatively different dynamical regimes. These transitions are controlled by a relatively small number of parameters, which may prove useful in the design, characterization and control of large artificial quantum structures.
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Testing Quantumness: From Artificial Quantum Arrays to Lattice Spin Models and Spin Liquids

Engineering and Physical Sciences Research Council

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Grant from the Ministry of Science and Higher Education of the Russian Federation in the framework of Increase Competitiveness Program of NUST MISiS, Grant No. K2-2020-001 and Russian Foundation for Basic Research (RFBR) 18-32- 20135

UKIERIUGC Thematic Partnership No. IND/CONT/G/16- 17/73

Entangled Rydberg matter for quantum sensing and simulations

Engineering and Physical Sciences Research Council

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History

School

  • Science

Department

  • Physics

Published in

npj Quantum Information

Publisher

Nature Research (part of Springer Nature)

Version

AM (Accepted Manuscript)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by Nature Research under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Acceptance date

05/11/2020

ISSN

2056-6387

eISSN

2056-6387

Language

en

Depositor

Dr Alexandre Zagoskin. Deposit date: 6 November 2020

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