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Updated: Aug 9, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
Detection and manipulation of statistical polarization in small spin ensembles
H J Mamin1, R Budakian, B W Chui
1IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120-6099, USA. mamin@almaden.ibm.com
Abstract:
We report the detection of the square root of N statistical polarization in a small ensemble of electron spin centers in SiO2 by magnetic resonance force microscopy. A novel detection technique was employed that captures the statistical polarization and cycles it between states that are either locked or antilocked to the effective field in the rotating frame. Using field gradients as high as 5 G/nm, we achieved a detection sensitivity equivalent to roughly two electron spins, and observed ultralong spin-lock lifetimes, as long as 20 s. Given a sufficient signal-to-noise ratio, this scheme should be extendable to single electron spin detection.
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