Probing beyond the laser coherence time in optical clock comparisons
Atomic Physics
2016-04-13 v2 Quantum Physics
Abstract
We develop differential measurement protocols that circumvent the laser noise limit in the stability of optical clock comparisons by synchronous probing of two clocks using phase-locked local oscillators. This allows for probe times longer than the laser coherence time, avoids the Dick effect, and supports Heisenberg-limited measurement precision. We present protocols for such frequency comparisons and develop numerical simulations of the protocols with realistic noise sources. These methods provide a route to reduce frequency ratio measurement durations by more than an order of magnitude.
Cite
@article{arxiv.1508.05129,
title = {Probing beyond the laser coherence time in optical clock comparisons},
author = {David B. Hume and David R. Leibrandt},
journal= {arXiv preprint arXiv:1508.05129},
year = {2016}
}
Comments
Replaced with published version. 8 pages, 4 figures