Design of Microresonators to Minimize Thermal Noise Below the Standard Quantum Limit

TL;DR

This paper introduces a novel microresonator design optimized to significantly reduce thermal noise below the Standard Quantum Limit at 10K, enabling enhanced quantum measurements and sensing applications.

Contribution

The paper proposes a new microresonator geometry that achieves thermal noise below the SQL across broad frequencies, advancing quantum measurement technology.

Findings

Thermal noise predicted to be below SQL at 10K

Design suitable for quantum non-demolition measurements

Potential to improve gravitational wave detectors

Abstract

We present a design for a new microresonator whose geometry is optimized to maximize sub-Standard Quantum Limit (SQL) performance. The new design is predicted to have thermal noise well below the SQL across a broad range of frequencies when operated at 10K. The performance of this designed microresonator will allow it to serve as a test-bed for quantum non-demolition measurements, and to open new regimes of precision measurement that are relevant for many practical sensing applications, including advanced gravitational wave detectors.