Coherent control of quantum collapse in a Bosonic Josephson junction by modulation of the scattering length
J Lozada-Vera, Vanderlei Salvador Bagnato, M C de Oliveira · New Journal of Physics · 2013
By means of a temporal-periodic modulation of the s-wave scattering length, a procedure to control the evolution of an initial atomic coherent state associated with a bosonic Josephson junction is presented.The scheme developed has a remarkable advantage of avoiding the quantum collapse of the state due to phase and number diffusion.This kind of control could prove useful for atom interferometry using BECs, where the interactions limit the evolution time stage within the interferometer, and where the modulation can be induced via magnetic Feshbach resonances as recently experimentally demonstrated.