Tunneling of two bosonic atoms from a one-dimensional anharmonic trap

Abstract

We investigate the quantum dynamics of two interacting bosonic atoms confined in a one-dimensional anharmonic trap. The tunneling rate, an experimentally measurable parameter of the system, was calculated as a function of the effective coupling interatomic constant $g$ from the ground (n=N=0) and first excited atomic states in the trap with respect to relative (n=2,N=0) and center-of-mass (n=0,N=2) atomic motion. This allows to investigate the initial population and pair correlation, as well as the effective coupling constant $g$, of the system by comparing the calculated tunneling rate with the experimental one. We have observed that the only possible tunneling scenario is a sequential particle tunneling in the cases we considered. We have also analyzed a rearrangement $(0,2)\rightleftarrows (2,0)$ of the spectrum in the limit $g\to \pm 0$ of noninteracting atoms.

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• Study of autonomous conservative oscillator using an improved perturbation method
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• Quench dynamics of two interacting atoms in a one-dimensional anharmonic trap
• Decay properties of unstable Tonks-Girardeau gases from a split trap
• Anharmonicity-Induced Criticality of Collective Excitation in a Trapped Bose-Einstein Condensate
• Tunneling of two interacting atoms from excited states
• Molecular excited state in the interaction quench dynamics of two different atoms in a two-dimensional anisotropic trap
• Dynamics of mode entanglement induced by particle-tunneling in the extended Bose-Hubbard dimer model