Sub shot-noise interferometric phase sensitivity with beryllium ions Schrodinger cat states (Articolo in rivista)

Type
Label
  • Sub shot-noise interferometric phase sensitivity with beryllium ions Schrodinger cat states (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Pezze, L; Smerzi, A (2007)
    Sub shot-noise interferometric phase sensitivity with beryllium ions Schrodinger cat states
    in Europhysics 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
  • 78 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Trent, CNR, INFM, BEC Ctr, I-38050 Trento, Italy; Univ Trent, Dipartimento Fis, I-38050 Trento, Italy (literal)
Titolo
  • Sub shot-noise interferometric phase sensitivity with beryllium ions Schrodinger cat states (literal)
Abstract
  • Interferometry with NOON quantum states can provide unbiased phase estimation with a sensitivity scaling as Delta theta similar to 1/ N-T given a prior knowledge that the true phase shift theta lies in the interval -pi <= theta <= pi. The protocol requires a total of N-T = 2(p) - 1 particles ( unequally) distributed among p independent measurements and overcomes basic difficulties present in previously proposed approaches. We demonstrate the possibility to obtain a phase sensitivity beating the classical shot-noise limit using published probabilities retrieved experimentally for the creation of Schrodinger cat quantum states containing up to N = 6 beryllium ions. Copyright (C) EPLA, 2007. (literal)
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