Heralded amplification for precision measurements with spin ensembles

TL;DR

The paper introduces a heralded amplification method for enhancing small spin rotations in particle ensembles, leveraging quantum memory primitives, with potential applications in atomic clocks and magnetometry.

Contribution

It presents a novel heralded amplification scheme utilizing quantum memory primitives for improving precision in spin-based measurements.

Findings

Scheme is feasible with current technology.

Potential to enhance atomic clock accuracy.

Applicable to sensitive magnetometry measurements.

Abstract

We propose a simple heralded amplification scheme for small rotations of the collective spin of an ensemble of particles. Our protocol makes use of two basic primitives for quantum memories, namely partial mapping of light onto an ensemble, and conversion of a collective spin excitation into light. The proposed scheme should be realizable with current technology, with potential applications to atomic clocks and magnetometry.