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The Pegg-Barnett Formalism and Covariant Phase Observables

Pekka Lahti·Juha-Pekka Pellonpaa
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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.

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Pekka Lahti, Juha-Pekka Pellonpaa. 2001-06-15. The Pegg-Barnett Formalism and Covariant Phase Observables. https://doi.org/10.1238/physica.regular.066a00066

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