Decreasing the uncertainty of atomic clocks via real-time noise distinguish

TL;DR

This paper introduces a real-time noise distinguish technique for atomic clocks that significantly reduces environmental noise effects, enhancing their long-term stability and accuracy.

Contribution

The study demonstrates a novel real-time noise distinguish method that improves atomic clock uncertainty and corrects frequency offsets caused by ambient noises.

Findings

Uncertainty reduced by about an order of magnitude.

Frequency offset corrected by the method.

Ambient noise contribution minimized.

Abstract

The environmental perturbation on atoms is the key factor restricting the performance of atomic frequency standards, especially in long term scale. In this letter, we demonstrate a real-time noise distinguish operation of atomic clocks. The operation improves the statistical uncertainty by about an order of magnitude of our fountain clock which is deteriorated previously by extra noises. The frequency offset bring by the extra noise is also corrected. The experiment proves the real-time noise distinguish operation can reduce the contribution of ambient noises and improve the uncertainty limit of atomic clocks.