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Coherent control of atomic spin currents in a double well
Chu, Shih-I Ng, H. T.
Chu, Shih-I
Ng, H. T.
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Abstract
We propose a method for controlling the atomic currents of a two-component Bose-Einstein condensate in a double well by applying an external field to the atoms in one of the potential wells. We study the ground-state properties of the system and show that the directions of spin currents and net-particle tunneling can be manipulated by adiabatically varying the coupling strength between the atoms and the field. This system can be used to study spin and tunneling phenomena across a wide range of interaction parameters. In addition, spin-squeezed states can be generated. It is useful for quantum information processing and quantum metrology.
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This is the published version, also available here: http://dx.doi.org/10.1103/PhysRevA.85.023636.
Date
2012-02-27
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American Physical Society
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Chu, Shih-I & Ng, H. T. "Coherent control of atomic spin currents in a double well." Phys. Rev. A 85, 023636 – Published 27 February 2012. http://dx.doi.org/10.1103/PhysRevA.85.023636.