Wigner function for SU(1,1)

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Seyfarth, U. and Klimov, Andrei B. and Guise, H. de and Leuchs, Gerd and Sánchez Soto, Luis Lorenzo (2020) Wigner function for SU(1,1). Quantum, 4 . ISSN 2521-327X

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Official URL: https://doi.org/10.22331/q-2020-09-07-317




Abstract

In spite of their potential usefulness, Wigner functions for systems with SU(1,1) symmetry have not been explored thus far. We address this problem from a physically-motivated perspective, with an eye towards applications in modern metrology. Starting from two independent modes, and after getting rid of the irrelevant degrees of freedom, we derive in a consistent way a Wigner distribution for SU(1,1). This distribution appears as the expectation value of the displaced parity operator, which suggests a direct way to experimentally sample it. We show how this formalism works in some relevant examples. Dedication: While this manuscript was under review, we learnt with great sadness of the untimely passing of our colleague and friend Jonathan Dowling. Through his outstanding scientific work, his kind attitude, and his inimitable humor, he leaves behind a rich legacy for all of us. Our work on SU(1,1) came as a result of long conversations during his frequent visits to Erlangen. We dedicate this paper to his memory.


Item Type:Article
Additional Information:

© Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften.
We acknowledge financial support from the Mexican Consejo Nacional de Ciencia y Tecnologia (CONACYT) (Grant 254127), the Spanish Ministerio de Ciencia e Innovación (MICINN) (Grant PGC2018-099183-B-I00) and the Natural Sciences and Engineering Research Council (NSERC) of Canada.

Uncontrolled Keywords:Coherent states; Quantum-mechanics; Space; Parity; Rerpesentation; SU(2)
Subjects:Sciences > Physics > Optics
ID Code:62403
Deposited On:07 Oct 2020 18:30
Last Modified:29 Apr 2022 16:02

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