Emergence of junction dynamics in a strongly interacting Bose mixture

Abstract

We study the dynamics of a one-dimensional system composed of a bosonic background and one impurity in single- and double-well trapping geometries. In the limit of strong interactions, this system can be modeled by a spin chain where the exchange coefficients are determined by the geometry of the trap. We observe non-trivial dynamics when the repulsion between the impurity and the background is dominant. In this regime, the system exhibits oscillations that resemble the dynamics of a Josephson junction. Furthermore, the double-well geometry allows for an enhancement in the tunneling as compared to the single-well case.

20 pages, 9 figures

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Cited by in corpus (5)

• One-dimensional mixtures of several ultracold atoms: a review
• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• State transfer in an inhomogeneous spin chain
• Generation of spin currents by a temperature gradient in a two-terminal device
• Collective tunnelling of strongly interacting cold atoms in a double well potential