publication . Article . Preprint . 2011

Interaction-driven interband tunneling of bosons in the triple well

Lushuai Cao; Ioannis Brouzos; Sascha Zöllner; Peter Schmelcher;
Open Access English
  • Published: 01 Mar 2011
  • Publisher: HAL CCSD
  • Country: France
Abstract
We study the tunneling of a small ensemble of strongly repulsive bosons in a one-dimensional (1D) triple-well potential. The usual treatment within the single-band approximation suggests a suppression of tunneling in the strong-interaction regime. However, we show that several windows of enhanced tunneling are opened in this regime. This enhanced tunneling results from higher band contributions, and has the character of interband tunneling. It can give rise to various tunneling processes, such as single-boson tunneling and two-boson correlated tunneling of the ensemble of bosons, and is robust against deformations of the triple-well potential. We introduce a bas...
Subjects
arXiv: Condensed Matter::Mesoscopic Systems and Quantum Hall EffectCondensed Matter::SuperconductivityCondensed Matter::Quantum Gases
free text keywords: MCTDH, [CHIM]Chemical Sciences, [PHYS]Physics [physics], Quantum Physics, Condensed Matter - Quantum Gases, General Physics and Astronomy, Physics, Quantum mechanics, Scanning tunneling spectroscopy, Boson, Quantum tunnelling, Condensed matter physics

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