Quantum switches and quantum memories for matter-wave lattice solitons

Details Quantum switches and quantum memories for matter-wave lattice solitons Quantum switches and quantum memories for matter-wave lattice solitons

2006-12-14

arxiv.org/abs/cond-mat/0612370v1

New Journal of Physics 9, 4 (2007).

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1088/1367-2630/9/1/004

We study the possibility of implementing a quantum switch and a quantum memory for matter wave lattice solitons by making them interact with "effective" potentials (barrier/well) corresponding to defects of the optical lattice. In the case of interaction with an "effective" potential barrier, the bright lattice soliton experiences an abrupt transition from complete transmission to complete reflection (quantum switch) for a critical height of the barrier. The trapping of the soliton in an "effective" potential well and its release on demand, without loses, shows the feasibility of using the system as a quantum memory. The inclusion of defects as a way of controlling the interactions between two solitons is also reported.

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