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Entanglement and squeezing with identical particles: ultracold atom quantum metrology

Benatti, F ; Floreanini, R ; Marzolino, U

Journal of physics. B, Atomic, molecular, and optical physics, 2011-05, Vol.44 (9), p.091001 [Periódico revisado por pares]

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Título:
Entanglement and squeezing with identical particles: ultracold atom quantum metrology
Autor: Benatti, F ; Floreanini, R ; Marzolino, U
Assuntos: Exact sciences and technology ; Fundamental areas of phenomenology (including applications) ; Nonclassical field states; squeezed, antibunched and sub-poissonian states; operational definitions of the phase of the field; phase measurements ; Optics ; Physics ; Quantum optics
É parte de: Journal of physics. B, Atomic, molecular, and optical physics, 2011-05, Vol.44 (9), p.091001
Descrição: In quantum metrological applications based on ultracold atom systems, entangled initial states are thought necessary to achieve sub-shot-noise accuracies. This conclusion, although strictly true for systems of distinguishable particles, does no longer hold for systems of identical particles. Indeed, while quantum non-locality is necessary, it can be encoded into the interferometric apparatus and not into the initial states. In particular, no preliminary spin-squeezing is necessary to reach quantum performances in metrological applications of ultracold atom physics.
Editor: Bristol: IOP Publishing
Idioma: Inglês

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