Ultracold quantum matter

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Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC

Physical Review Letters American Physical Society 116:24 (2016) 240402

Authors:

Dieter H Jaksch, Tomi H Johnson, Yongjun Yuan, Weizhu Bao, Stephen RJF Clark, Chrisopher J Foot

Abstract:

We investigate cold bosonic impurity atoms trapped in a vortex lattice formed by condensed bosons of another species. We describe the dynamics of the impurities by a bosonic Hubbard model containing occupation-dependent parameters to capture the effects of strong impurity-impurity interactions. These include both a repulsive direct interaction and an attractive effective interaction mediated by the BEC. The occupation dependence of these two competing interactions drastically affects the Hubbard model phase diagram, including causing the disappearance of some Mott lobes.
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Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC

(2015)

Authors:

TH Johnson, Y Yuan, W Bao, SR Clark, C Foot, D Jaksch
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Design of a millimetre-scale magnetic surface trap for cold atoms

Journal of Physics B Atomic Molecular and Optical Physics IOP Publishing 47:7 (2014) 075302

Authors:

D Trypogeorgos, SD Albright, D Beesley, CJ Foot
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Design of a millimetre-scale magnetic surface trap for cold atoms

(2013)

Authors:

Dimitris Trypogeorgos, Stephen D Albright, Daniel Beesley, Christopher J Foot
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Co-trapping different species in ion traps using multiple radio-frequencies

(2013)

Authors:

Dimitris Trypogeorgos, Christopher Foot
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