Tuesday, April 16, 2013

1304.4116 (J. Lozada-Vera et al.)

Coherent control of phase diffusion in a Bosonic Josephson junction by
scattering length modulation

J. Lozada-Vera, V. S. Bagnato, M. C. de Oliveira
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.
View original: http://arxiv.org/abs/1304.4116

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