Dual-Species Synchronous Spin-Exchange Optical Pumping

Abstract

We demonstrate a novel quantum sensor for measuring non-magnetic spin-dependent interactions. This sensor utilizes ${}^{131}$Xe, ${}^{129}$Xe, and ${}^{85}$Rb which are continuously polarized transverse to a pulsed bias field. The transverse geometry of this spin-exchange pumped comagnetometer suppresses longitudinal polarization, which is an important source of systematic error. Simultaneous excitation of both Xe isotopes is accomplished by frequency modulating the repetition rate of the bias field pulses at subharmonics of the Xe Larmor resonance frequencies. The area of each bias pulse causes $2\pi$ Larmor precession of the Rb. We present continuous dual-species Xe excitation and discuss a temperature-dependent wall interaction that limits the ${}^{129}$Xe polarization. The Rb atoms serve as an embedded magnetometer for detection of the Xe precession. We discuss Rb magnetometer phase shifts, and show that even first-order treatments of these phase shifts can result in order-of-magnitude improvements in the achieved field suppression when performing comagnetometry. The sensing bandwidth of the presented device is 1 Hz, and we demonstrate a white-noise level of 7 $\mu$Hz/$\sqrt{\text{Hz}}$ and a bias instability of $\sim 1$ $\mu$Hz.

References in corpus (15)

• Nuclear spin gyroscope based on an atomic co-magnetometer
• A new test of local Lorentz invariance using ${}^{21}$Ne-Rb-K comagnetometer
• New limit on Lorentz and CPT-violating neutron spin interactions
• A Laboratory Search for a Long-Range T-odd, P-odd Interaction from Axion-Like Particles using Dual Species Nuclear Magnetic Resonance with Polarized Xe-129 and Xe-131 Gas
• Optically Polarized ${}^3$He
• Improved Limits on Spin-Mass Interactions
• New classes of systematic effects in gas spin co-magnetometers
• Synchronous Spin-Exchange Optical Pumping
• Nuclear quadrupole resonances in compact vapor cells: the crossover from the NMR to the NQR interaction regimes
• Suppression of Spin-Exchange Relaxation Using Pulsed Parametric Resonance
• Continuous Comagnetometry using Transversely Polarized Xe Isotopes
• Frequency shifts in noble-gas magnetometers
• Precision calculation of scalar nuclear spin-spin coupling in a noble gas mixture
• High-precision determination of the frequency-shift enhancement factor in Rb-${}^{129}$Xe
• Isotope shift of nuclear magnetic resonances in 129Xe and 131Xe caused by spin-exchange pumping by alkali metal atoms