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The Field Clock Quieted Its Own Pump
An atom-referenced dual-laser architecture pushed a compact cesium beam clock into the 10^-13 short-term stability regime.
Summary
An atom-referenced dual-laser architecture pushed a compact cesium beam clock into the 10^-13 short-term stability regime.
A compact cesium beam clock uses a Faraday anomalous-dispersion filter and modulation-transfer spectroscopy to suppress pump-laser frequency noise and drift. The authors report a 2.12-kilohertz laser linewidth, signal-to-noise ratio of 46,365 in one hertz and fractional Allan deviation of 7.7 times 10^-13 divided by the square root of averaging time. The preprint presents a laboratory prototype and pathway for deployable timing, not a field-qualified navigation product.
Why it matters
An atom-referenced dual-laser architecture pushed a compact cesium beam clock into the 10^-13 short-term stability regime.
Limits and context
- The preprint presents a laboratory prototype and pathway for deployable timing, not a field-qualified navigation product.
Key claims
An atom-referenced dual-laser architecture pushed a compact cesium beam clock into the 10^-13 short-term stability regime.
Qualification: The preprint presents a laboratory prototype and pathway for deployable timing, not a field-qualified navigation product.
Evidence: source-2026-08-07-009
Sources
- arXiv preprint 2608.06169arXiv · primary research
Corrections
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