RT Journal Article
T1 Engineering fast and stable splitting of matter waves
A1 Torrontegui Muñoz, Erik
A1 Martínez-Garaot, Sofía
A1 Modugno, Michelle
A1 Chen, Xi
A1 Muga, Juan Gonzalo
AB When attempting to split a coherent noninteracting atomic cloud by bifurcating the initial trap into two well-separated wells, slow adiabatic following is unstable with respect to any slight trap asymmetry, and the matter wave "collapses" to the well with the lowest energy. A generic fast chopping splits the wave but it also excites it. Shortcuts to adiabaticity engineered to speed up the unperturbed adiabatic process through nonadiabatic transients provide, instead, quiet and robust balanced splitting. For a Bose-Einstein condensate in the mean-field limit, the interatomic interaction makes the splitting, adiabatic or via shortcuts, more stable with respect to trap asymmetry. Simple formulas are provided to distinguish different regimes.
PB American Physical Society
SN 1050-2947
YR 2013
FD 2013-03
LK https://hdl.handle.net/10016/32140
UL https://hdl.handle.net/10016/32140
LA eng
NO We are grateful to A. Aspect, B. Julia-Díaz, J. Martorell, D. Meschede, J. Mompart, and A. Polls for discussions. We acknowledge funding by Projects No. IT472-10, No. FIS2009-12773-C02-01, and No. FIS2012-36673-C03-01 and the UPV/EHU program UFI 11/55. X.C. thanks the National Natural Science Foundation of China (Grant No. 61176118) and the Shanghai Rising-Star Program (Grant No. 12QH1400800). E.T. and S.M.-G. acknowledge support through UPV/EHU fellowships.
DS e-Archivo
RD 27 jul. 2024