Crossing Over from Attractive to Repulsive Interactions in a Tunneling Bosonic Josephson Junction

Abstract

We explore the interplay between tunneling and interatomic interactions in the dynamics of a bosonic Josephson junction. We tune the scattering length of an atomic ${}^{39}$K Bose-Einstein condensate confined in a double-well trap to investigate regimes inaccessible to other superconducting or superfluid systems. In the limit of small-amplitude oscillations, we study the transition from Rabi to plasma oscillations by crossing over from attractive to repulsive interatomic interactions. We observe a critical slowing down in the oscillation frequency by increasing the strength of an attractive interaction up to the point of a quantum phase transition. With sufficiently large initial oscillation amplitude and repulsive interactions the system enters the macroscopic quantum self-trapping regime, where we observe coherent undamped oscillations with a self-sustained average imbalance of the relative well population. The exquisite agreement between theory and experiments enables the observation of a broad range of many body coherent dynamical regimes driven by tunable tunneling energy, interactions and external forces, with applications spanning from atomtronics to quantum metrology.

10 pages, 8 figures, supplemental materials are included

References in corpus (11)

• Nonlinear atom interferometer surpasses classical precision limit
• Matter-wave interferometry in a double well on an atom chip
• Squeezing and entanglement in a Bose-Einstein condensate
• Fisher Information and entanglement of non-Gaussian spin states
• Coherent Oscillations in an Exciton-Polariton Josephson Junction
• Feshbach resonances in ultracold K(39)
• Dynamics of a tunable superfluid junction
• Coherent superposition of current flows in an Atomtronic Quantum Interference Device
• Multipartite Entanglement at Finite Temperature
• Josephson plasma oscillations and the Gross-Pitaevskii equation: Bogoliubov approach vs two-mode model
• Phase-slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates

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