Practical scheme for the optimal measuremnet in quantum interferometric devices

Details Practical scheme for the optimal measuremnet in quantum interferometric devices Practical scheme for the optimal measuremnet in quantum interferometric devices

2002-12-06

arxiv.org/abs/quant-ph/0212037v2

Phys. Lett. A 313 (2003) pp. 16-20

Physics

Quantum Physics

4 pages and 3 figures

Scientific paper

10.1016/S0375-9601(03)00719-9

We apply a Kennedy-type detection scheme, which was originally proposed for a binary communications system, to interferometric sensing devices. We show that the minimum detectable perturbation of the proposed system reaches the ultimate precision bound which is predicted by Neyman-Pearson hypothesis testing. To provide concrete examples, we apply our interferometric scheme to phase shift detection by using coherent and squeezed probe fields.

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