Molecular vortex generated from an atom-molecule dark state (6 pages)

Hong Yuan Ling, David E. Grochowski, Sun Yi +2 more

Hong Yuan Ling, S. Yi, Han Pu +2 more

We consider a Raman photoassociation model in a field configuration in which a Gaussian and a first-order Laguerre Gaussian laser field are applied between the bound-bound and free-bound transitions, respectively. We show that such a configuration can lead to a coherent population trapping superposition of an atomic condensate and a ground molecular vortex of unit winding number. We develop stimulated Raman adiabatic passages that minimize the effect of mean-field shifts due to collisions, for optimal conversion of an atomic condensate into a ground molecular vortex.

Weiping, Zhang, Ling +3 more

Sorayut Glomglome, Somsak Mitatha, Preecha P. Yupapin

We present the novel system of molecular distributed sensors using dark soliton pulse array, whereas the multi dark soliton sources can be generated and the molecular distributed sensors presented via an optical multiplexer (MUX). Initially, the dark soliton array with different center wavelengths can be generated, then the transmission molecules/atoms can be secured by using the dark soliton behaviors, whereas the dark soliton valley can be configured as the molecule/atom trapping potential well, which can be used to trap molecule/atom. In this case, the transported molecules/atoms in the router can be used to form the molecular distributed sensors, whereas the induced changes in the molecular distributed sensors can be formed and measured via the drop port of each output multiplexer.

Alon Luski

Andrew J. Robertson, Lei Jiang, Han Pu +2 more

We show that a robust macroscopic atom-molecule dark state can exist in fermionic systems, which represents a coherent superposition between the ground molecular BEC and the atomic BCS paired state. We take advantage of the tunability offered by external laser fields, and explore this superposition for demonstrating coherent oscillations between ground molecules and atom pairs. We interpret the oscillation frequencies in terms of the collective excitations of the dark state.