Effect of one-, two-, and three-body atom loss processes on superpositions of phase states in Bose-Josephson junctions
In: The European Physical Journal B: Condensed Matter and Complex Systems The European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2014, 87, pp.157. ⟨10.1140/epjb/e2014-50066-8⟩ European Physical Journal B: Condensed Matter and Complex Systems European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2014, 87, pp.157. ⟨10.1140/epjb/e2014-50066-8⟩ The European Physical Journal B: Condensed Matter and Complex Systems, 2014, 87, pp.157. ⟨10.1140/epjb/e2014-50066-8⟩; (2014)
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Zugriff:
In a two-mode Bose-Josephson junction formed by a binary mixture of ultracold atoms, macroscopic superpositions of phase states are produced during the time evolution after a sudden quench to zero of the coupling amplitude. Using quantum trajectories and an exact diagonalization of the master equation, we study the effect of one-, two-, and three-body atom losses on the superpositions by analyzing separately the amount of quantum correlations in each subspace with fixed atom number. The quantum correlations useful for atom interferometry are estimated using the quantum Fisher information. We identify the choice of parameters leading to the largest Fisher information, thereby showing that, for all kinds of loss processes, quantum correlations can be partially protected from decoherence when the losses are strongly asymmetric in the two modes.
Comment: 23 pages, 8 figures, to be published in Eur. Phys. J. B
| Titel: |
Effect of one-, two-, and three-body atom loss processes on superpositions of phase states in Bose-Josephson junctions
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| Autor/in / Beteiligte Person: | Pawłowski, Krzysztof ; Ferrini, Giulia ; Minguzzi, Anna ; Spehner, Dominique ; Institut Fourier (IF ) ; Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) ; Laboratoire de physique et modélisation des milieux condensés (LPM2C) ; Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire Kastler Brossel (LKB (Lhomond)) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS) ; École normale supérieure - Paris (ENS Paris) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire Kastler Brossel (LKB (Jussieu)) ; Institut Fourier (IF) ; Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA) ; Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA) ; Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS) ; Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) ; École normale supérieure - Paris (ENS-PSL) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
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| Quelle: | The European Physical Journal B: Condensed Matter and Complex Systems The European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2014, 87, pp.157. ⟨10.1140/epjb/e2014-50066-8⟩ European Physical Journal B: Condensed Matter and Complex Systems European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2014, 87, pp.157. ⟨10.1140/epjb/e2014-50066-8⟩ The European Physical Journal B: Condensed Matter and Complex Systems, 2014, 87, pp.157. ⟨10.1140/epjb/e2014-50066-8⟩; (2014) |
| Veröffentlichung: | arXiv, 2014 |
| Medientyp: | unknown |
| ISSN: | 1434-6028 (print) ; 1434-6036 (print) |
| DOI: | 10.48550/arxiv.1401.7238 |
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