# Measure the temperature of the spin via weak measurement

## TL;DR

This paper proposes a novel weak measurement method with postselection to accurately determine the spin temperature in magnetic resonance force microscopy, especially effective at high temperatures, enhancing measurement precision.

## Contribution

It introduces a new weak measurement scheme with postselection for spin temperature estimation, improving precision in high-temperature regimes.

## Key findings

- Effective temperature measurement at high temperatures
- Enhanced precision using postselected weak measurement
- Potential applications in magnetic resonance microscopy

## Abstract

In this study, we give a new proposal to measure the temperature of the spin in a sample in magnetic resonance force microscopy system by using postselected weak measurement, and investigate the fisher information to estimate the precision of our scheme. We showed that in high temperature regime the temperature of the spin can be measured via weak measurement technique with proper postselection and our scheme able to increase the precision of temperature estimation.