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arXiv · 1001.3313

Sub-shot-noise quantum metrology with entangled identical particles

F. Benatti·R. Floreanini·U. Marzolino
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Abstract

The usual notion of separability has to be reconsidered when applied to states describing identical particles. A definition of separability not related to any a priori Hilbert space tensor product structure is needed: this can be given in terms of commuting subalgebras of observables. Accordingly, the results concerning the use of the quantum Fisher information in quantum metrology are generalized and physically reinterpreted.

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F. Benatti, R. Floreanini, U. Marzolino. 2010-01-19. Sub-shot-noise quantum metrology with entangled identical particles. https://doi.org/10.1016/j.aop.2010.01.005

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