Determination of Continuous Variable Entanglement by Purity Measurements
- 25 February 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 92 (8) , 087901
- https://doi.org/10.1103/physrevlett.92.087901
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 measurements of purity.Keywords
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This publication has 13 references indexed in Scilit:
- Detecting genuine multipartite continuous-variable entanglementPhysical Review A, 2003
- Experimentally realizable characterizations of continuous-variable Gaussian statesPhysical Review A, 2002
- Overlap and entanglement-witness measurementsPhysical Review A, 2002
- Direct Estimations of Linear and Nonlinear Functionals of a Quantum StatePhysical Review Letters, 2002
- Computable measure of entanglementPhysical Review A, 2002
- Evaluating capacities of bosonic Gaussian channelsPhysical Review A, 2001
- Peres-Horodecki Separability Criterion for Continuous Variable SystemsPhysical Review Letters, 2000
- Inseparability Criterion for Continuous Variable SystemsPhysical Review Letters, 2000
- Capacity of quantum Gaussian channelsPhysical Review A, 1999
- Volume of the set of separable statesPhysical Review A, 1998