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arXiv · 1809.08795

Quantum sensing using imbalanced counter-rotating Bose--Einstein condensate modes

G. Pelegrí·J. Mompart·V. Ahufinger
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Abstract

A quantum device for measuring two-body interactions, scalar magnetic fields and rotations is proposed using a Bose--Einstein condensate (BEC) in a ring trap. We consider an imbalanced superposition of orbital angular momentum modes with opposite winding numbers for which a rotating minimal atomic density line appears. We derive an analytical model relating the angular frequency of the minimal density line rotation to the strength of the non-linear atom-atom interactions and the difference between the populations of the counter-propagating modes. Additionally, we propose a full experimental protocol based on direct fluorescence imaging of the BEC that allows to measure all the quantities involved in the analytical model and use the system for sensing purposes.

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G. Pelegrí, J. Mompart, V. Ahufinger. 2018-09-24. Quantum sensing using imbalanced counter-rotating Bose--Einstein condensate modes. https://doi.org/10.1088/1367-2630/aae107

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