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|Abstract:||We describe a He-3-Xe-129 comagnetometer using Rb-87 atoms for noble-gas spin polarization and detection. We use a train of Rb-87 pi pulses and sigma(+)/sigma(-) optical pumping to realize a finite-field Rb magnetometer with suppression of spin-exchange relaxation. We suppress frequency shifts from polarized Rb by measuring the He-3 and Xe-129 spin precession frequencies in the dark, while applying pi pulses along two directions to depolarize Rb atoms. The plane of the pi pulses is rotated to suppress the Bloch-Siegert shifts for the nuclear spins. We measure the ratio of He-3 to Xe-129 spin precession frequencies with sufficient absolute accuracy to resolve Earth’s rotation without changing the orientation of the comagnetometer. A frequency resolution of 7 nHz is achieved after integration for 8 h without evidence of significant drift.|
|Electronic Publication Date:||16-Jan-2018|
|Citation:||Limes, ME, Sheng, D, Romalis, MV. (2018). He-3-Xe-129 Comagnetometery using Rb-87 Detection and Decoupling. PHYSICAL REVIEW LETTERS, 120 (10.1103/PhysRevLett.120.033401|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||PHYSICAL REVIEW LETTERS|
|Version:||Final published version. Article is made available in OAR by the publisher's permission or policy.|
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