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Article Dans Une Revue Phys.Rev.A Année : 2020

Relating spin squeezing to multipartite entanglement criteria for particles and modes

Matteo Fadel
  • Fonction : Auteur
Manuel Gessner

Résumé

Entanglement witnesses based on first and second moments exist in the form of spin-squeezing criteria for the detection of particle entanglement from collective measurements, and in form of modified uncertainty relations for the detection of mode entanglement or steering. By revealing a correspondence between them, we show that metrologically useful spin squeezing reveals multimode entanglement in symmetric spin states that are distributed into addressable modes. We further derive tight state-independent multipartite entanglement bounds on the spin-squeezing coefficient and point out their connection to widely-used entanglement criteria that depend on the state's polarization. Our results are relevant for state-of-the-art experiments where symmetric entangled states are distributed into a number of addressable modes, such as split spin-squeezed Bose-Einstein condensates.

Dates et versions

hal-03547234 , version 1 (28-01-2022)

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Matteo Fadel, Manuel Gessner. Relating spin squeezing to multipartite entanglement criteria for particles and modes. Phys.Rev.A, 2020, 102, pp.012412. ⟨10.1103/PhysRevA.102.012412⟩. ⟨hal-03547234⟩
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