Mach-Zehnder interferometry at the heisenberg limit with coherent and squeezed-vacuum light (Articolo in rivista)

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Label
  • Mach-Zehnder interferometry at the heisenberg limit with coherent and squeezed-vacuum light (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Pezze, L; Smerzi, A (2008)
    Mach-Zehnder interferometry at the heisenberg limit with coherent and squeezed-vacuum light
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pezze, L; Smerzi, A (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 100 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Pezze, Luca; Smerzi, Augusto] Univ Trent, DEC CNR INFM, I-38050 Povo, Italy; [Pezze, Luca; Smerzi, Augusto] Univ Trent, Dipartimento Fis, I-38050 Povo, Italy (literal)
Titolo
  • Mach-Zehnder interferometry at the heisenberg limit with coherent and squeezed-vacuum light (literal)
Abstract
  • We show that the phase sensitivity Delta theta of a Mach-Zehnder interferometer illuminated by a coherent state in one input port and a squeezed-vacuum state in the other port is (i) independent of the true value of the phase shift and (ii) can reach the Heisenberg limit Delta theta similar to 1/N-T, where N-T is the average number of input particles. We also demonstrate that the Cramer-Rao lower bound of phase sensitivity, Delta theta similar to 1/root|alpha|(2)e(2r)+sinh(2)r, can be saturated for arbitrary values of the squeezing parameter r and the amplitude of the coherent mode alpha by using a Bayesian phase inference protocol. (literal)
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