Controlled spin domain creation by phase separation

Details Controlled spin domain creation by phase separation Controlled spin domain creation by phase separation

2011-11-23

arxiv.org/abs/1111.5541v1

Physics

Condensed Matter

Quantum Gases

Scientific paper

We demonstrate a method of controlled creation of spin domains in spin-1 antiferromagnetic Bose-Einstein condensates. The method exploits the phenomenon of phase separation of spin components in an external potential. By using an appropriate time dependent potential, a composition of spin domains can be created, as we demonstrate in the particular cases of a double well and a periodic potential. In contrast to other methods, which rely on spatially inhomogeneous magnetic fields, here the domain structure is completely determined by the optical fields, which makes the method versatile and reconfigurable. It allows for creation of domains of various sizes, with the spatial resolution limited by the spin healing length only.

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