Photon-number superselection and the entangled coherent-state representation

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 longstanding puzzles of the coherence of a laser output field, interference between two number states, and dichotomous interpretations of quantum teleportation of coherent states.

9 pages, 3 figures, published version

References in corpus (9)

• Experimental investigation of continuous variable quantum teleportation
• Quantum teleportation of light beams
• Entangled Coherent State Qubits in an Ion Trap
• Entanglement constrained by superselection rules
• The Quantum State of an Ideal Propagating Laser Field
• Requirement of optical coherence for continuous-variable quantum teleportation
• Representations of the Weyl group and Wigner functions for SU(3)
• Nonclassical Fields and the Nonlinear Interferometer
• There is no unmet requirement of optical coherence for continuous-variable quantum teleportation

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