Spin-Echo-Based Magnetometry with Spinor Bose-Einstein Condensates

We demonstrate detection of a weak alternate-current magnetic field by application of the spin echo technique to F = 2 Bose-Einstein condensates. A magnetic field sensitivity of 12 pT/Hz^1/2 is attained with the atom number of 5*10^3 at spatial resolution of 99 \mu m^2. Our observations indicate mag...

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Bibliographic Details
Published in:arXiv.org 2013-06
Main Authors: Eto, Yujiro, Ikeda, Hayato, Suzuki, Hirosuke, Hasegawa, Sho, Tomiyama, Yasushi, Sekine, Sawako, Sadgrove, Mark, Hirano, Takuya
Format: Article
Language:English
Subjects:
Bose-Einstein condensates
Magnetic fields
Magnetic measurement
Magnetism
Power supplies
Spatial resolution
Variation
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Summary:We demonstrate detection of a weak alternate-current magnetic field by application of the spin echo technique to F = 2 Bose-Einstein condensates. A magnetic field sensitivity of 12 pT/Hz^1/2 is attained with the atom number of 5*10^3 at spatial resolution of 99 \mu m^2. Our observations indicate magnetic field fluctuations synchronous with the power supply line frequency. We show that this noise is greatly suppressed by application of a reverse phase magnetic field. Our technique is useful in order to create a stable magnetic field environment, which is an important requirement for atomic experiments which require a weak bias magnetic field.
ISSN:2331-8422
DOI:10.48550/arxiv.1306.1011