Determination of continuous variable entanglement by purity measurements

Preprint

23 October 2003

preprint
Published by arXiv in arXiv

Abstract

We classify the entanglement of two-mode Gaussian states according to their degree of total and partial mixedness. We derive exact bounds that determine maximally and minimally entangled states for fixed global and marginal purities. This characterization allows for an experimentally reliable estimate of continuous variable entanglement based on purity measurements.

Keywords

CONTINUOUS VARIABLE ENTANGLEMENT
CHARACTERIZATION ALLOWS
VARIABLE ENTANGLEMENT
PURITY MEASUREMENTS
MODE GAUSSIAN
EXACT BOUNDS
RELIABLE

All Related Versions

Version 1, 2003-10-23, ArXiv
Version 2, 2003-10-24, ArXiv
Version 3, 2003-10-28, ArXiv
Version 4, 2004-02-25, ArXiv
Published version: Physical Review Letters, 92 (8), 087901.

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