Journal
PHYSICAL REVIEW A
Volume 92, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.92.023615
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Funding
- National Basic Research Program of China [2013CB922003, 2014CB921401]
- National Natural Science Foundation of China [11275139, 11434011, 11121403, 91421102]
- National Science Foundation (U.S.) [1208828]
- NSAF [U1330201]
- Fundamental Research Funds for the Central Universities
- Direct For Mathematical & Physical Scien
- Division Of Physics [1208828] Funding Source: National Science Foundation
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With current magnetic-field shielding and high-precision detection in dipolar spinor Bose-Einstein condensates, it is possible to experimentally detect the low-or zero-field nonsecular dipolar dynamics. Here we analytically investigate the zero-field nonsecular magnetic dipolar interaction effect, with an emphasis on magnetization dynamics in a spin-1 Bose-Einstein condensate under the single spatial mode approximation within the mean-field theory. Due to the biaxial nature of the dipolar interaction, a novel resonance occurs in the condensate magnetization oscillation, in contrast to the previous assumption of a conserved magnetization in strong magnetic fields. Furthermore, we propose a dynamical-decoupling detection method for such a resonance, which cancels the stray magnetic fields in experiment but restores the magnetization dynamics. Our results shed light on the dipolar systems and may find potential applications beyond cold atoms.
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