The Quantum State of an Ideal Propagating Laser Field

Preprint

5 December 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/0104036

Abstract

We give a quantum information-theoretic description of an ideal propagating CW laser field and reinterpret typical quantum-optical experiments in light of this. In particular we show that contrary to recent claims [T. Rudolph and B. C. Sanders, Phys. Rev. Lett. 87, 077903 (2001)], a conventional laser can be used for quantum teleportation with continuous variables and for generating continuous-variable entanglement. Optical coherence is not required, but phase coherence is. We also show that coherent states play a priveleged role in the description of laser light.

Keywords

THEORETIC DESCRIPTION
CONTINUOUS VARIABLES
IDEAL PROPAGATING
PROPAGATING LASER
QUANTUM STATE
LASER FIELD

All Related Versions

Version 1, 2001-04-09, ArXiv
Version 2, 2001-04-25, ArXiv
Version 3, 2001-12-05, ArXiv
Version 1, 2001-11-29, ArXiv (Unconfirmed version)
Published version: Physical Review Letters, 88 (2), 027902.

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