Coherent zero-field magnetization resonance in a dipolar spin-1 Bose-Einstein condensate
arXiv:1507.06729 · doi:10.1103/PhysRevA.92.023615
Abstract
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, 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 experiments but restores the magnetization dynamics. Our results shed new lights on the dipolar systems and may find potential applications beyond cold atoms.
6 pages, 3 figures, to be appear in Phys. Rev. A
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Cited by in corpus (9)
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- Quasi-one-dimensional spin-orbit- and Rabi-coupled bright dipolar Bose-Einstein-condensate solitons
- Precise measurements on a quantum phase transition in antiferromagnetic spinor Bose-Einstein condensates
- Production of large Bose-Einstein condensates in a magnetic-shield-compatible hybrid trap
- Magnetic field induced dynamical instabilities in an anti-ferromagnetic spin-1 Bose-Einstein condensate
- Preserving coherent spin and squeezed spin states of a spin-1 Bose-Einstein condensate with rotary echoes
- Generalized parametric resonance in a spin-1 Bose-Einstein condensate
- Rebuilding of destroyed spin squeezing in noisy environments
- Critically-enhanced spin-nematic squeezing and entanglement in dipolar spinor condensates