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arXiv · 1201.1779

Manipulating dipolar and spin-exchange interactions in spin-1 Bose-Einstein condensates

Bo-Yuan Ning·S. Yi·Jun Zhuang·J. Q. You·Wenxian Zhang
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Abstract

It remains a challenge to independently manipulate the magnetic dipolar and the spin-exchange interactions, which are entangled in many spin systems, particularly in spin-1 Bose-Einstein condensates. For this purpose, we put forward a sequence of rf pulses and the periodic dynamical decoupling sequence of optical Feshbach resonance pulses to control the dipolar and the spin-exchange interactions, respectively. Our analytic results and the numerical simulations demonstrate that either of the two interactions can be suppressed to make the other dominate the spin dynamics; furthermore, both of the interactions can be simultaneously suppressed to realize spinor-condensate-based magnetometers with a higher sensitivity. This manipulation method may find its wide applications in magnetic resonance and spintronics.

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Bo-Yuan Ning, S. Yi, Jun Zhuang, J. Q. You, Wenxian Zhang. 2012-05-21. Manipulating dipolar and spin-exchange interactions in spin-1 Bose-Einstein condensates. https://doi.org/10.1103/physreva.85.053646

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