The confinement induced resonance in spin-orbit coupled cold atoms with Raman coupling

YC Zhang, SW Song, WM Liu - Scientific Reports, 2014 - nature.com
YC Zhang, SW Song, WM Liu
Scientific Reports, 2014nature.com
The confinement induced resonance provides an indispensable tool for the realization of the
low-dimensional strongly interacting quantum system. Here, we investigate the confinement
induced resonance in spin-orbit coupled cold atoms with Raman coupling. We find that the
quasi-bound levels induced by the spin-orbit coupling and Raman coupling result in the
Feshbach-type resonances. For sufficiently large Raman coupling, the bound states in one
dimension exist only for sufficiently strong attractive interaction. Furthermore, the bound …
Abstract
The confinement induced resonance provides an indispensable tool for the realization of the low-dimensional strongly interacting quantum system. Here, we investigate the confinement induced resonance in spin-orbit coupled cold atoms with Raman coupling. We find that the quasi-bound levels induced by the spin-orbit coupling and Raman coupling result in the Feshbach-type resonances. For sufficiently large Raman coupling, the bound states in one dimension exist only for sufficiently strong attractive interaction. Furthermore, the bound states in quasi-one dimension exist only for sufficient large ratio of the length scale of confinement to three dimensional s-wave scattering length. The Raman coupling substantially changes the confinement-induced resonance position. We give a proposal to realize confinement induced resonance through increasing Raman coupling strength in experiments.
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