Phase Evolution in Spatial Dark States

Details Phase Evolution in Spatial Dark States Phase Evolution in Spatial Dark States

2010-01-22

arxiv.org/abs/1001.3961v1

Phys. Rev. A 81, 043640 (2010)

Physics

Quantum Physics

6 pages, 6 figures

Scientific paper

10.1103/PhysRevA.81.043640

Adiabatic techniques using multi-level systems have recently been generalised from the optical case to settings in atom optics, solid state and even classical electrodynamics. The most well known example of these is the so called STIRAP process, which allows transfer of a particle between different states with large fidelity. Here we generalise and examine this process for an atomic centre-of-mass state with a non-trivial phase distribution and show that even though dark state dynamics can be achieved for the atomic density, the phase dynamics will still have to be considered as a dynamical process. In particular we show that the combination of adiabatic and non-adiabatic behaviour can be used to engineer phase superposition states.

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