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Title: Wigner functions for arbitrary quantum systems
Authors: Tilma, Todd
Everitt, Mark J.
Samson, J.H.
Munro, W.J.
Nemoto, Kae
Keywords: Characteristic functions
Group parametrizations
Issue Date: 2016
Publisher: © American Physical Society
Citation: TILMA, T. ... et al, 2016. Wigner functions for arbitrary quantum systems. Physical Review Letters, 117 (18), 180401.
Abstract: The possibility of constructing a complete, continuous Wigner function for any quantum system has been a subject of investigation for over 50 years. A key system that has served to illustrate the difficulties of this problem has been an ensemble of spins. While numerous attempts have come close to generating a complete Wigner phase-space description for such a system, each has either been artificial in its construction or restricted in its applications. Here we present a general method of constructing Wigner functions that can be used to fully describe quantum spin systems of any dimension or ensemble size.
Description: This paper was accepted for publication in the journal Physical Review Letters and the definitive published version is available at https://doi.org/10.1103/PhysRevLett.117.180401.
Sponsor: MEXT Grant-in-Aid for Scientific Research on Innovative Areas "Science of hybrid quantum systems" Grant Number 15H05870 and JSPS KAKENHI Grant No. 25220601.
Version: Published
DOI: 10.1103/PhysRevLett.117.180401
URI: https://dspace.lboro.ac.uk/2134/22824
Publisher Link: https://doi.org/10.1103/PhysRevLett.117.180401
ISSN: 0031-9007
Appears in Collections:Published Articles (Physics)

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