Properties of a Polarization based Phase Operator

Details Properties of a Polarization based Phase Operator Properties of a Polarization based Phase Operator

2011-06-21

arxiv.org/abs/1106.4234v1

Physics

Quantum Physics

11 pages, 6 figures

Scientific paper

We define a Hermitian phase operator for zero mass spin one particles (photons) by taking account polarization. The Hilbert space includes the positive helicity states and negative helicity states with opposite circular polarization. We define an operator which corresponds to the physical process of reversing the sense of polarization and acts as a bridge between positive helicity states and negative helicity states. The exponential phase operator obtained using the entire set is unitary and acts as ladder operator over all the states. The phase operator derived from this exponential operator satisfies the canonical commutation relations with the number operator. We have calculated the density matrix and the phase probability distribution of various states like coherent states, squeezed states and thermal states, to illustrate the utility of our operator.

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