A Modified Approach to Single-Spin Detection Using Magnetic Resonance Force Microscopy

TL;DR

This paper proposes a modified magnetic resonance force microscopy method capable of detecting the quantum jumps of a single spin's magnetic moment, enabling single-proton detection which is not possible with conventional techniques.

Contribution

The paper introduces a novel modification to MRFM that allows detection of single-spin quantum jumps, advancing single-spin measurement capabilities.

Findings

Potential to detect magnetic signals from a single proton

Estimation of detection feasibility for single-spin signals

Proposed modification enhances sensitivity over conventional MRFM

Abstract

The magnetic moment of a single spin interacting with a cantilever in magnetic resonance force microscopy (MRFM) experiences quantum jumps in orientation rather than smooth oscillations. These jumps cannot be detected by a conventional MRFM based on observation of driven resonant oscillations of a cantilever. In this paper, we propose a method which will allow detection of the magnetic signal from a single spin using a modification of a conventional MRFM. We estimate the opportunity to detect the magnetic signal from a single proton.