Raman-Ramsey CPT with a grating magneto-optical trap

Rachel Elvin; Gregory W. Hoth; Michael W. Wright; James P. McGilligan; Aidan S. Arnold; Paul F. Griffin; Erling Riis

doi:10.1109/EFTF.2018.8408998

Raman-Ramsey CPT with a grating magneto-optical trap

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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
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	https://doi.org/10.1109/EFTF.2018.8408998
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
Abbreviated title	EFTF 2018
Country/Territory	Italy
City	Turin
Period	10/04/18 → 12/04/18
Internet address	http://www.eftf2018.it/uk/

Keywords

quantum technology
atomic clock
coherent population trapping
cold atoms
laser cooling

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10.1109/EFTF.2018.8408998

Elvin-etal-EFTF2018-Raman-Ramsey-CPT-with-a-grating-magneto-optical-trapAccepted author manuscript, 381 KB

Cite this

@inproceedings{4de66294abb74039a341865dcf906558,

title = "Raman-Ramsey CPT with a grating magneto-optical trap",

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.",

keywords = "quantum technology, atomic clock, coherent population trapping, cold atoms, laser cooling",

author = "Rachel Elvin and Hoth, \{Gregory W.\} and Wright, \{Michael W.\} and McGilligan, \{James P.\} and Arnold, \{Aidan S.\} and Griffin, \{Paul F.\} and Erling Riis",

note = "{\textcopyright} 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.; 2018 European Frequency and Time Forum , EFTF 2018 ; Conference date: 10-04-2018 Through 12-04-2018",

year = "2018",

month = jul,

day = "12",

doi = "10.1109/EFTF.2018.8408998",

language = "English",

pages = "61--64",

booktitle = "2018 European Frequency and Time Forum (EFTF)",

publisher = "IEEE",

url = "http://www.eftf2018.it/uk/",

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T1 - Raman-Ramsey CPT with a grating magneto-optical trap

AU - Elvin, Rachel

AU - Hoth, Gregory W.

AU - Wright, Michael W.

AU - McGilligan, James P.

AU - Arnold, Aidan S.

AU - Griffin, Paul F.

AU - Riis, Erling

N1 - © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2018/7/12

Y1 - 2018/7/12

N2 - 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.

AB - 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.

KW - quantum technology

KW - atomic clock

KW - coherent population trapping

KW - cold atoms

KW - laser cooling

UR - http://www.eftf2018.it/uk/

UR - https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=8401511

U2 - 10.1109/EFTF.2018.8408998

DO - 10.1109/EFTF.2018.8408998

M3 - Conference contribution book

SP - 61

EP - 64

BT - 2018 European Frequency and Time Forum (EFTF)

PB - IEEE

CY - Piscataway, NJ

T2 - 2018 European Frequency and Time Forum

Y2 - 10 April 2018 through 12 April 2018

ER -

Raman-Ramsey CPT with a grating magneto-optical trap

Abstract

Conference

Keywords

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UK Quantum Technology Hub for Sensors and Metrology

Data for Raman-Ramsey CPT with the Grating Magneto Optical Trap

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Raman-Ramsey CPT with a grating magneto-optical trap

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Projects

UK Quantum Technology Hub for Sensors and Metrology

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Data for Raman-Ramsey CPT with the Grating Magneto Optical Trap

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