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Article

The Influence of s-Wave Interactions on Focussing of Atoms

by 1,2,† and 2,*
1
Research School of Physics, The Australian National University, Canberra 2601, Australia
2
School of Physics, University of Melbourne, Melbourne 3010, Australia
*
Author to whom correspondence should be addressed.
Formerly known as Amir Masoud Kordbacheh.
Academic Editor: Mark Edwards
Received: 21 May 2021 / Revised: 11 June 2021 / Accepted: 21 June 2021 / Published: 25 June 2021
(This article belongs to the Section Cold Atoms, Quantum Gases and Bose-Einstein Condensation)
The focusing of a rubidium Bose–Einstein condensate via an optical lattice potential is numerically investigated. The results are compared with a classical trajectory model which underestimates the width of the focused beam. Via the inclusion of the effects of interactions into the classical trajectories model, we show that it is possible to obtain reliable estimates for the width of the focused beam when compared to numerical integration of the Gross–Pitaevskii equation. Finally, we investigate the optimal regimes for focusing and find that for a strongly interacting Bose–Einstein condensate focusing of order 20 nm may be possible. View Full-Text
Keywords: Bose–Einstein condensate; atom lithography; s-wave interactions; Gross–Pitaevskii equation; classical trajectories; optical lattice Bose–Einstein condensate; atom lithography; s-wave interactions; Gross–Pitaevskii equation; classical trajectories; optical lattice
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MDPI and ACS Style

Richberg, R.; Martin, A.M. The Influence of s-Wave Interactions on Focussing of Atoms. Atoms 2021, 9, 37. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9030037

AMA Style

Richberg R, Martin AM. The Influence of s-Wave Interactions on Focussing of Atoms. Atoms. 2021; 9(3):37. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9030037

Chicago/Turabian Style

Richberg, Roham, and Andrew M. Martin 2021. "The Influence of s-Wave Interactions on Focussing of Atoms" Atoms 9, no. 3: 37. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9030037

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