Experimentally realizable characterizations of continuous variable Gaussian states

Details Experimentally realizable characterizations of continuous variable Gaussian states Experimentally realizable characterizations of continuous variable Gaussian states

2002-06-06

arxiv.org/abs/quant-ph/0206037v1

Phys. Rev. A66, 030301(Rapid Comm) (2002)

Physics

Quantum Physics

4 pages, This paper supersedes quant-ph/0203151

Scientific paper

10.1103/PhysRevA.66.030301

Measures of entanglement, fidelity and purity are basic yardsticks in quantum
information processing. We propose how to implement these measures using linear
devices and homodyne detectors for continuous variable Gaussian states. In
particular, the test of entanglement becomes simple with some prior knowledge
which is relevant to current experiments.

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