Factoring the unitary evolution operator and quantifying entanglement

Details Factoring the unitary evolution operator and quantifying entanglement Factoring the unitary evolution operator and quantifying entanglement

2000-03-07

arxiv.org/abs/quant-ph/0003024v1

Phys. Lett. A, 262(1999)287

Physics

Quantum Physics

11 pages, LATEX, no figures

Scientific paper

10.1016/S0375-9601(99)00609-X

The unitary evolution can be represented by a finite product of exponential
operators. It leads to a perturbative expression of the density operator of a
close system. Based on the perturbative expression scheme, we present a
entanglement measure, this measure has the advantage that it is easy to compute
for a general dynamical process.

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