Time-resolved observation of thermalization in an isolated quantum system

Clos, Govinda, Porras, Diego, Warring, Ulrich and Schaetz, Tobias (2016) Time-resolved observation of thermalization in an isolated quantum system. Physical Review Letters, 117 (17). p. 170401. ISSN 0031-9007

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Abstract

We use trapped atomic ions forming a hybrid Coulomb crystal and exploit its phonons to study an isolated quantum system composed of a single spin coupled to an engineered bosonic environment. We increase the complexity of the system by adding ions and controlling coherent couplings and, thereby, we observe the emergence of thermalization: Time averages of spin observables approach microcanonical averages while related fluctuations decay. Our platform features precise control of system size, coupling strength, and isolation from the external world to explore the dynamics of equilibration and thermalization.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Atomic, Molecular and Optical Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 25 Nov 2016 10:09
Last Modified: 07 Sep 2017 17:51
URI: http://sro.sussex.ac.uk/id/eprint/65644

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Project NameSussex Project NumberFunderFunder Ref
Marie Curie ActionsUnsetEUFP7/2007-2013