High-Resolution Magnetometry with a Spinor Bose-Einstein Condensate

Journal Article · Fri May 18 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.200801· OSTI ID:20951365

Vengalattore, M; Higbie, J M; Leslie, S R; Guzman, J; Sadler, L E ^[1]; Stamper-Kurn, D M ^[1]

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1. Department of Physics, University of California, Berkeley California 94720 (United States)

We demonstrate a precise magnetic microscope based on direct imaging of the Larmor precession of a {sup 87}Rb spinor Bose-Einstein condensate. This magnetometer attains a field sensitivity of 8.3 pT/Hz{sup 1/2} over a measurement area of 120 {mu}m{sup 2}, an improvement over the low-frequency field sensitivity of modern SQUID magnetometers. The achieved phase sensitivity is close to the atom shot-noise limit, estimated as 0.15 pT/Hz{sup 1/2} for a unity duty cycle measurement, suggesting the possibilities of spatially resolved spin-squeezed magnetometry. This magnetometer marks a significant application of degenerate atomic gases to metrology.

• OSTI ID: 20951365
• Journal Information: Physical Review Letters, Vol. 98, Issue 20; Other Information: DOI: 10.1103/PhysRevLett.98.200801; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
LARMOR PRECESSION
MAGNETOMETERS
RUBIDIUM 87
SENSITIVITY
SPIN
SQUID DEVICES