TY - JOUR
T1 - Persistent current formation in double-ring geometries
AU - Bland, T.
AU - Marolleau, Q.
AU - Comaron, P.
AU - Malomed, B. A.
AU - Proukakis, N. P.
N1 - Publisher Copyright:
© 2020 The Author(s). Published by IOP Publishing Ltd.
PY - 2020/6/14
Y1 - 2020/6/14
N2 - Quenching an ultracold bosonic gas in a ring across the Bose-Einstein condensation phase transition is known, and has been experimentally observed, to lead to the spontaneous emergence of persistent currents. The present work examines how these phenomena generalize to a system of two experimentally accessible explicitly two-dimensional co-planar rings with a common interface, or to the related lemniscate geometry, and demonstrates an emerging independence of winding numbers across the rings, which can exhibit flow both in the same and in opposite directions. The observed persistence of such findings in the presence of dissipative coupled evolution due to the local character of the domain formation across the phase transition and topological protection of the randomly emerging winding numbers should be within current experimental reach.
AB - Quenching an ultracold bosonic gas in a ring across the Bose-Einstein condensation phase transition is known, and has been experimentally observed, to lead to the spontaneous emergence of persistent currents. The present work examines how these phenomena generalize to a system of two experimentally accessible explicitly two-dimensional co-planar rings with a common interface, or to the related lemniscate geometry, and demonstrates an emerging independence of winding numbers across the rings, which can exhibit flow both in the same and in opposite directions. The observed persistence of such findings in the presence of dissipative coupled evolution due to the local character of the domain formation across the phase transition and topological protection of the randomly emerging winding numbers should be within current experimental reach.
UR - http://www.scopus.com/inward/record.url?scp=85085735355&partnerID=8YFLogxK
U2 - 10.1088/1361-6455/ab81e9
DO - 10.1088/1361-6455/ab81e9
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AN - SCOPUS:85085735355
SN - 0953-4075
VL - 53
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
IS - 11
M1 - 115301
ER -