Visibility and stability of superstripes in a spin-orbit-coupled Bose-Einstein condensate
Anno: 2015
Autori: Martone GI.
Affiliazione autori: Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy.
Abstract: We consider a spin-1/2 Bose-Einstein condensate with equal Rashba and Dresselhaus spin-orbit coupling. After reviewing some relevant features of the quantum phases of the system, we present a short study on how their properties are changed by the presence of non-zero magnetic detunings and spin-asymmetric interactions. At small values of the Raman coupling and of the magnetic field the so-called stripe phase occurs, which displays both superfluidity and periodic density modulations, in analogy with supersolids. We finally review a recent proposal (Phys. Rev. A 90, 041604) to improve the visibility of the fringes, based on the space separation of the two spin components into a 2D bi-layer configuration and on the application of a pi/2 Bragg pulse, and we show that this new configuration also yields a sizable increase of the stability of the stripe phase against magnetic fluctuations.
Giornale/Rivista: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Volume: 224 (3) Da Pagina: 553 A: 563
Maggiori informazioni: The author acknowledges stimulating discussions with Yun Li and Sandro Stringari. This work has been supported by ERC through the QGBE grant and by Provincia Autonoma di Trento.Parole chiavi: Neutral Atoms; Crystals; GasDOI: 10.1140/epjst/e2015-02386-xCitazioni: 14dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-12-08Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
