Entanglement versus negative domains of Wigner functions

Jens Peder Dahl, H. Mack, A. Wolf, W. P. Schleich

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Abstract

We show that s waves, that is wave functions that only depend on a hyperradius, are entangled if and only if the corresponding Wigner functions exhibit negative domains. We illustrate this feature using a special class of s waves which allows us to perform the calculations analytically. This class includes a Gaussian, a maximally entangled as well as a "shell" state.
Original languageEnglish
JournalPhysical Review A
Volume74
Issue number4
Pages (from-to)042323
ISSN2469-9926
DOIs
Publication statusPublished - 2006

Bibliographical note

Copyright 2006 American Physical Society

Keywords

  • STATES
  • SYSTEMS
  • BELL INEQUALITY
  • INTEGRALS

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