${}^3$He-${}^{129}$Xe Comagnetometery using ${}^{87}$Rb Detection and Decoupling

Abstract

We describe a ${}^3$He-${}^{129}$Xe comagnetometer using ${}^{87}$Rb atoms for noble-gas spin polarization and detection. We use a train of ${}^{87}$Rb $\pi$ 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 ${}^3$He and ${}^{129}$Xe 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 ${}^3$He to ${}^{129}$Xe spin precession frequencies with sufficient absolute accuracy to resolve the Earth's rotation without changing the orientation of the comagnetometer. A frequency resolution of 7 nHz is achieved after integration for 8 hours without evidence of significant drift.

References in corpus (5)

• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• New limit on Lorentz and CPT-violating neutron spin interactions
• Robust quantum parameter estimation: coherent magnetometry with feedback
• New classes of systematic effects in gas spin co-magnetometers
• Limit on Lorentz and CPT violation of the bound Neutron Using a Free Precession 3He/129Xe co-magnetometer

Cited by in corpus (1)

• Dipolar and scalar ${}^3$He-${}^{129}$Xe frequency shifts in stemless cells