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A compact cold-atom clock based on a loop-gap cavity
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DOI：10.1063/5.0057150.png)
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Abstract
En 中文
We introduce a compact atomic clock based on laser-cooled atoms trapped inside a loop-gap microwave cavity. The cavity occupies a volume eight times smaller than conventional cylindrical cavities while maintaining a high quality factor in the presence of the ten apertures required for optical manipulation of cold atoms. The measured linewidth of the Ramsey spectrum, which is limited by the free fall distance of the atomic cloud in the cavity, was 19.6 Hz. The corresponding frequency instability was sigma(y)(tau) = 2.5 x 10(-12) tau(-1/2), which could be further improved by reducing the local oscillator noise. This work paves a way toward high-performance portable atomic clocks.
Keywords:
FOUNTAIN
SAMPLE
TESTS
NOISE
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3.6
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10.4W
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17.8W
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