Meissner-like effect for synthetic gauge field in multimode cavity QED
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Previous realizations of synthetic gauge fields for ultracold atoms do not allow the spatial profile of the field to evolve freely. We propose a scheme which overcomes this restriction by using the light in a multimode cavity, in conjunction with Raman coupling, to realize an artificial magnetic field which acts on a Bose-Einstein condensate of neutral atoms. We describe the evolution of such a system, and present the results of numerical simulations which show dynamical coupling between the effective field and the matter on which it acts. Crucially, the freedom of the spatial profile of the field is sufficient to realize a close analogue of the Meissner effect, where the magnetic field is expelled from the superfluid. This back-action of the atoms on the synthetic field distinguishes the Meissner-like effect described here from the Hess-Fairbank suppression of rotation in a neutral superfluid observed elsewhere.
Ballantine , K E , Lev , B L & Keeling , J 2017 , ' Meissner-like effect for synthetic gauge field in multimode cavity QED ' Physical Review Letters , vol 118 , no. 4 , 045302 . DOI: 10.1103/PhysRevLett.118.045302
Physical Review Letters
© 2017, American Physical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at journals.aps/prb / http://dx.doi.org/10.1103/PhysRevLett.118.045302
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