6533b83afe1ef96bd12a7161
RESEARCH PRODUCT
Nuclear-spin comagnetometer based on a liquid of identical molecules
Derek F. Jackson KimballJohn W. BlanchardDmitry BudkerDmitry BudkerTeng WuMin Jiangsubject
PhysicsSpinsAtomic Physics (physics.atom-ph)Frequency ratioGeneral Physics and AstronomyFOS: Physical sciences02 engineering and technologyMagnetic field gradient021001 nanoscience & nanotechnologyPolarization (waves)01 natural sciencesMolecular physicsGravitational energyPhysics - Atomic Physics0103 physical sciencesMolecule010306 general physics0210 nano-technologyNucleonOrder of magnitudedescription
Atomic comagnetometers are used in searches for anomalous spin-dependent interactions. Magnetic field gradients are one of the major sources of systematic errors in such experiments. Here we describe a comagnetometer based on the nuclear spins within an ensemble of identical molecules. The dependence of the measured spin-precession frequency ratio on the first-order magnetic field gradient is suppressed by over an order of magnitude compared to a comagnetometer based on overlapping ensembles of different molecules. Our single-species comagnetometer is shown to be capable of measuring the hypothetical spin-dependent gravitational energy of nuclei at the $10^{-17}$ eV level, comparable to the most stringent existing constraints. Combined with techniques for enhancing the signal such as parahydrogen-induced polarization, this method of comagnetometry offers the potential to improve constraints on spin-gravity coupling of nucleons by several orders of magnitude.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-04-09 |