Journal article

Magnetic pseudo-fields in a rotating electron-nuclear spin system

AA Wood, E Lilette, YY Fein, VS Perunicic, LCL Hollenberg, RE Scholten, AM Martin

Nature Physics | Nature Research | Published : 2017

Abstract

Analogous to the precession of a Foucault pendulum observed on the rotating Earth, a precessing spin observed in a rotating frame of reference appears frequency-shifted. This can be understood as arising from a magnetic pseudo-field1,2 in the rotating frame that nevertheless has physically significant consequences, such as the Barnett effect3. To detect these pseudo-fields, a rotating-frame sensor is required4. Here we use quantum sensors, nitrogen–vacancy (NV) centres, in a rapidly rotating diamond to detect pseudo-fields in the rotating frame. Whereas conventional magnetic fields induce precession at a rate proportional to the gyromagnetic ratio, rotation shifts the precession of all spins..

View full abstract

Grants

Awarded by Australian Research Council


Funding Acknowledgements

We acknowledge valuable discussions with L. P. McGuinness and J.-P. Tetienne, and thank D. A. Simpson and A. D. Stacey for discussions and providing the diamond sample. This work was supported by the Australian Research Council Discovery Scheme (DP150101704).