Photon-number superselection and the entangled coherent-state representation

Barry C. Sanders; Stephen D. Bartlett; Terry Rudolph; Peter L. Knight

doi:10.1103/PhysRevA.68.042329

Photon-number superselection and the entangled coherent-state representation

Barry C. Sanders, Stephen D. Bartlett, Terry Rudolph, Peter L. Knight

Department of Physics and Astronomy

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45 Citations (Scopus)

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Abstract

We introduce the entangled coherent-state representation, which provides a powerful technique for efficiently and elegantly describing and analyzing quantum optics sources and detectors while respecting the photon-number superselection rule that is satisfied by all known quantum optics experiments. We apply the entangled coherent-state representation to elucidate and resolve the long-standing puzzles of the coherence of a laser output field, interference between two number states, and dichotomous interpretations of quantum teleportation of coherent states.

Original language	English
Pages (from-to)	042329-1-042329-9
Number of pages	9
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	68
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.68.042329
Publication status	Published - 2003

Bibliographical note

Sanders BC, Bartlett SD, Rudolph T and Knight PL, Physical review. A, Atomic, molecular, and optical physics, 68(4), 042329, 2003. Copyright 2003 by the American Physical Society. The original article can be found at http://dx.doi.org/10.1103/PhysRevA.68.042329

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10.1103/PhysRevA.68.042329

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