期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 14, 页码 2922-2925出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.2922
关键词
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A vortex in a condensate in a nonspherical trapping potential will in general experience a torque. The torque will induce tilting of the direction of the vortex axis. We observe this behavior experimentally and show that by applying small distortions to the trapping potential, we can control the tilting behavior. By suppressing vortex tilt, we have been able to hold the vortex axis along the line of sight for up to 15 sec. Alternatively, we can induce a 180 degrees tilt, effectively reversing the charge on the vortex as observed in the lab frame. We characterize the vortex nondestructively with a surface-wave spectroscopic technique.
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