Notes on Thermodynamic Principle for Quantum Metrology

TL;DR

This paper discusses a fundamental thermodynamic limit on quantum metrology, showing that energy consumption is fundamentally tied to the erasure of quantum Fisher information, which affects measurement precision.

Contribution

It provides detailed insights into how thermodynamic principles constrain quantum measurement precision through quantum Fisher information erasure.

Findings

Energy consumption limit linked to quantum Fisher information erasure

Quantum Fisher information determines the best measurement precision

Thermodynamic principles impose fundamental constraints on quantum metrology

Abstract

Recently, we find a physical limit on energy consumption of quantum metrology, and demonstrate that it essentially arises from the erasure of quantum Fisher information (QFI) which determines the best achievable measurement precision. Here, we provide more details in order to further elaborate the essence of this principle.