Nonclassical States: An Observable Criterion

Werner Vogel
Phys. Rev. Lett. 84, 1849 – Published 28 February 2000
PDFExport Citation

Abstract

An observable criterion is derived that allows one to distinguish nonclassical states of the harmonic oscillator from those having a classical counterpart. A quantum state is shown to have no classical counterpart if and only if the characteristic functions of the quadrature distributions or the s-parametrized phase-space distributions exhibit a slower decay than for the ground state of the oscillator. This renders it possible to experimentally check the failure of the P function to be a probability measure.

  • Received 10 March 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.1849

©2000 American Physical Society

Authors & Affiliations

Werner Vogel

  • Arbeitsgruppe Quantenoptik, Fachbereich Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany

Comments & Replies

Comment on “Nonclassical States: An Observable Criterion”

Lajos Diósi
Phys. Rev. Lett. 85, 2841 (2000)

Vogel Replies:

Werner Vogel
Phys. Rev. Lett. 85, 2842 (2000)

References (Subscription Required)

Click to Expand
Issue

Vol. 84, Iss. 9 — 28 February 2000

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×