Computable bounds for the discrimination of Gaussian states

Details Computable bounds for the discrimination of Gaussian states Computable bounds for the discrimination of Gaussian states

2008-06-10

arxiv.org/abs/0806.1625v2

Phys. Rev. A 78, 012331 (2008)

Physics

Quantum Physics

8 pages, 1 figure. REVTeX

Scientific paper

10.1103/PhysRevA.78.012331

By combining the Minkowski inequality and the quantum Chernoff bound, we
derive easy-to-compute upper bounds for the error probability affecting the
optimal discrimination of Gaussian states. In particular, these bounds are
useful when the Gaussian states are unitarily inequivalent, i.e., they differ
in their symplectic invariants.

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