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Abstract
We describe an experiment which combines cold 87Rb atoms from a grating magneto-optical trap (GMOT) with Lin-perp-Lin coherent population trapping (CPT) and pulsed Ramsey interrogation. The bichromatic fields required for Lin-perp-Lin are generated by combining light from a single external cavity diode laser (ECDL) with an electro-optic modulator (EOM) and an acousto-optic modulator (AOM). With this laser system and the GMOT, we are able to produce Raman-Ramsey fringes using either the F' = 1 or the F' = 2 excited states of the 87 Rb D1 line. As a step towards realising a frequency standard based on the GMOT, we measure the Ramsey fringe amplitude as a function of the magnetic bias field and the excited state. We observe dark state interference with F' = 1 and show that this interference is suppressed with F' = 2, as expected from prior work on CPT with 87Rb in thermal vapour cells.
Original language | English |
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Title of host publication | 2018 European Frequency and Time Forum (EFTF) |
Place of Publication | Piscataway, NJ |
Publisher | IEEE |
Pages | 61-64 |
Number of pages | 4 |
ISBN (Electronic) | 9781538656204 |
DOIs | |
Publication status | Published - 12 Jul 2018 |
Event | 2018 European Frequency and Time Forum - National Museum of Automobiles, Turin, Italy Duration: 10 Apr 2018 → 12 Apr 2018 http://www.eftf2018.it/uk/ |
Conference
Conference | 2018 European Frequency and Time Forum |
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Abbreviated title | EFTF 2018 |
Country/Territory | Italy |
City | Turin |
Period | 10/04/18 → 12/04/18 |
Internet address |
Keywords
- quantum technology
- atomic clock
- coherent population trapping
- cold atoms
- laser cooling
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Dive into the research topics of 'Raman-Ramsey CPT with a grating magneto-optical trap'. Together they form a unique fingerprint.Projects
- 1 Finished
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UK Quantum Technology Hub for Sensors and Metrology
Hastie, J. (Principal Investigator), Arnold, A. (Co-investigator), Griffin, P. (Co-investigator), Kemp, A. (Co-investigator) & Riis, E. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/12/14 → 30/11/19
Project: Research
Datasets
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Data for Raman-Ramsey CPT with the Grating Magneto Optical Trap
Hoth, G. (Creator), University of Strathclyde, 2018
DOI: 10.15129/64d52d65-b1d5-4466-ad6a-11c2a2f7c6e9
Dataset