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Extreme spin squeezing for photons

Mitchell, Morgan W ; Beduini, Federica A

New journal of physics, 2014-07, Vol.16 (7), p.73027-17 [Periódico revisado por pares]

Bristol: IOP Publishing

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  • Título:
    Extreme spin squeezing for photons
  • Autor: Mitchell, Morgan W ; Beduini, Federica A
  • Assuntos: Compressing ; correlation functions ; Density ; Entanglement ; entanglement generation ; Estimates ; Invariants ; Noise levels ; Permutations ; Photon density ; Photonics ; Photons ; Physics ; Polarization ; polarization squeezing ; spin squeezing
  • É parte de: New journal of physics, 2014-07, Vol.16 (7), p.73027-17
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: We apply spin-squeezing techniques to identify and quantify highly multi-partite photonic entanglement in polarization-squeezed light. We consider a practical single-mode scenario, and find that Wineland-criterion polarization squeezing implies entanglement of a macroscopic fraction of the total photons. A Glauber-theory computation of the observable N-photon density matrix, with N up to 100, finds that N-partite entanglement is observable despite losses and without post-selection. Genuine multi-partite entanglement up to at least is similarly confirmed. The preparation method can be made intrinsically permutation-invariant, allowing highly efficient state reconstruction. In this scenario, generation plus detection requires experimental resources, in stark contrast to the typical exponential scaling. We estimate existing detectors could observe 1000-partite entanglement from a few dB of polarization squeezing.
  • Editor: Bristol: IOP Publishing
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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