Fast and optimal generation of entanglement in bosonic Josephson junctions

Anno: 2019

Autori: Sorelli G., Gessner M., Smerzi A., Pezzè L.

Affiliazione autori: CNR, INO, QSTAR, Largo Enrico Fermi 2, I-50125 Florence, Italy; LENS, Largo Enrico Fermi 2, I-50125 Florence, Italy; Albert Ludwigs Univ Freiburg, Phys Inst, Hermann Herder Str 3, D-79104 Freiburg, Germany; PSL Univ, CNRS, Ecole Normale Super, Dept Phys, 24 Rue Lhomond, F-75005 Paris, France

Abstract: We use an exact quantum phase model to study the dynamical generation of particle entanglement in a bosonic Josephson junction composed by two coupled and interacting Bose-Einstein condensates. Using analytical arguments, we show that linear coupling can accelerate the creation of entanglement with respect to the well-known one-axis twisting model where coupling is absent. Furthermore, with a numerical analysis of optimal control schemes, we identify the optimal parameters for the fast generation of metrologically useful entanglement on short timescales: the optimal evolution is generated for a specific ratio between the coupling and the interaction strength.

Giornale/Rivista: PHYSICAL REVIEW A

Volume: 99 (2)      Da Pagina: 022329-1  A: 022329-11

Parole chiavi: BOSE-EINSTEIN CONDENSATE; STATES
DOI: 10.1103/PhysRevA.99.022329

Citazioni: 13
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2022-09-25
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