Progress Toward an Atomic Clock Based on a Continuous Cold Rubidium Beam
| Autor: | Zhixin Meng, Yanying Feng, Xiaojie Li, Peiqiang Yan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Condensed Matter::Quantum Gases
business.industry Flux chemistry.chemical_element Trapping 01 natural sciences Atomic clock Rubidium Optics chemistry Free evolution Laser cooling 0103 physical sciences Demodulation Medicine Physics::Atomic Physics 010306 general physics business 010301 acoustics Beam (structure) |
| Zdroj: | I2MTC |
| DOI: | 10.1109/i2mtc43012.2020.9128474 |
| Popis: | We reported on the progress toward an atomic clock based on a continuous cold 87Rb atomic beam. The atomic beam source is generated directly from a 2D+ Magneto-Optical Trapping (MOT) with the flux of about 3×109 atoms/s and mean longitudinal velocity of 10 m/s. The beam had a free evolution time of 9 ms over the separated distance of 90 mm, producing a 54-Hz-wide Raman-Ramsey fringe. The Signal-to-Noise ratio (SNR) of Raman-Ramsey fringes is effectively increased by modulation and demodulation methods, which offer a promising approach to improving the frequency stability of the atomic clock. |
| Databáze: | OpenAIRE |
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