The Pegg-Barnett Formalism and Covariant Phase Observables

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.

10 pages

References in corpus (2)

• Are Number and Phase Complementary Observables?
• Covariant localizations in the torus and the phase observables

Cited by in corpus (7)

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• Optimal covariant measurements: the case of a compact symmetry group and phase observables
• Extreme phase and rotated quadrature measurements