Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session K05: Degenerate Fermi Gases and Many-Body Physics
10:30 AM–12:30 PM,
Wednesday, June 2, 2021
Chair: Waseem Bakr, Princeton
Abstract: K05.00007 : Dynamical Phase Diagram of Ultracold Josephson Junctions.*
11:42 AM–11:54 AM
Live
Presenter:
Klejdja Xhani
(Istituto Nazionale di Ottica CNR-INO, Sesto Fiorentino, Italy, and Joint Quantum Centre (JQC) Durham-Newcastle, School of Mathematics, Statistics and Physics, Newcastle Univ)
Authors:
Klejdja Xhani
(Istituto Nazionale di Ottica CNR-INO, Sesto Fiorentino, Italy, and Joint Quantum Centre (JQC) Durham-Newcastle, School of Mathematics, Statistics and Physics, Newcastle Univ)
Luca Galantucci
(Joint Quantum Centre (JQC) Durham-Newcastle, School of Mathematics, Statistics and Physics, Newcastle University, UK)
Carlo Barenghi
(Joint Quantum Centre (JQC) Durham-Newcastle, School of Mathematics, Statistics and Physics, Newcastle University, UK)
Giacomo Roati
(Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), LENS and Dipartimento di Fisica e Astronomia, Universita di Firenze, 50019, Sesto Fiorentino)
Andrea Trombettoni
(Istituto Officina dei Materiali del CNR and Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy)
Nikolaos Proukakis
(Joint Quantum Centre (JQC) Durham-Newcastle, School of Mathematics, Statistics and Physics, Newcastle University, UK)
In this talk, we provide a complete study of the phase diagram emerging in a three-dimensional Josephson junction composed of two Bose-Einstein condensates of molecules of 6Li, which are coupled through a barrier [3-4]. In particular, we show the presence of all three dynamical regimes upon careful control of the barrier height, width and z0. Moreover, our work connects the role of the barrier, vortex rings and associated acoustic emission with different regimes of the superfluid dynamics across the junction.
References:
[1] M. Albiez et al., PRL 95, 010402(2005).
[2] G. Valtolina et al., Science 350,1505 (2015).
[3] K. Xhani et al., PRL 124, 045301 (2020).
[4] K. Xhani et al., NJP 22, 123006 (2020).
*This work was supported by the QuantERA project NAQUAS (EPSRC EP/R043434/1), EPSRC project EP/R005192/1 and the European Research Council under GA No. 307032 QuFerm2D, the Italian MIUR under the PRIN2017 project CEnTraL.
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