Photon-number superselection and the entangled coherent-state representation

Journal Article · Wed Oct 01 00:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.68.042329· OSTI ID:20640316

Sanders, Barry C; Bartlett, Stephen D; Rudolph, Terry; Knight, Peter L ^[1]

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1. Department of Physics, Macquarie University, Sydney, New South Wales 2109 (Australia)

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.

• OSTI ID: 20640316
• Journal Information: Physical Review. A, Vol. 68, Issue 4; Other Information: DOI: 10.1103/PhysRevA.68.042329; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANNIHILATION OPERATORS
EIGENSTATES
ENERGY LEVELS
INTERFERENCE
LASER RADIATION
LASERS
OPTICS
PHOTONS
SUPERSELECTION RULES