A1 Refereed original research article in a scientific journal
The Pegg-Barnett formalism and covariant phase observables
Authors: Lahti P, Pellonpaa JP
Publisher: ROYAL SWEDISH ACAD SCIENCES
Publication year: 2002
Journal:Physica Scripta
Journal name in sourcePHYSICA SCRIPTA
Journal acronym: PHYS SCRIPTA
Volume: 66
Issue: 1
First page : 66
Last page: 70
Number of pages: 5
ISSN: 0031-8949
DOI: https://doi.org/10.1238/Physica.Regular.066a00066
Abstract
We compare the Pegg-Barnett (PB) formalism with the covariant phase observable approach to the problem of quantum phase and show that PB-formalism gives essentially the same results as the canonical (covariant) phase observable. We also show that PB-formalism can be extended to cover all covariant phase observables including the covariant phase observable arising from the angle margin of the Husimi Q-function.
We compare the Pegg-Barnett (PB) formalism with the covariant phase observable approach to the problem of quantum phase and show that PB-formalism gives essentially the same results as the canonical (covariant) phase observable. We also show that PB-formalism can be extended to cover all covariant phase observables including the covariant phase observable arising from the angle margin of the Husimi Q-function.
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