Towards a compact, optically-interrogated, cold-atom microwave clock

Rachel Elvin; Michael W. Wright; Ben Lewis; Brendan L. Keliehor; Alan Bregazzi; James P. McGilligan; Aidan S. Arnold; Paul F. Griffin; Erling Riis

doi:10.1515/aot-2020-0022

Towards a compact, optically-interrogated, cold-atom microwave clock

Rachel Elvin, Michael W. Wright, Ben Lewis, Brendan L. Keliehor, Alan Bregazzi, James P. McGilligan, Aidan S. Arnold, Paul F. Griffin, Erling Riis

Research output: Contribution to journal › Article › peer-review

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Abstract

A compact platform for cold atoms opens a range of exciting possibilities for portable, robust, and accessible quantum sensors. In this work we report on the development of a cold-atom microwave clock in a small package. Our work utilises the grating magneto-optical trap and high-contrast coherent population trapping in the lin⊥lin polarisation scheme. We optically probe the atomic round-state splitting of cold 87Rb atoms using a Ramsey-like sequence whilst the atoms are in free-fall. We have measured a
short-term fractional frequency stability of 5×10−11/√t with a projected quantum projection noise limit at the 10 −13/√t level.

Original language	English
Pages (from-to)	297-303
Number of pages	7
Journal	Advanced Optical Technologies
Volume	9
Issue number	5
Early online date	7 Sep 2019
DOIs	https://doi.org/10.1515/aot-2020-0022
Publication status	Published - 31 Oct 2020

Keywords

CPT
atomic clock
coherent population trapping
cold atoms

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10.1515/aot-2020-0022

Elvin-etal-AOT-2019-Towards-a-compact-optically-interrogated-cold-atom-microwave-clockAccepted author manuscript, 1.64 MB

1 Finished

UK Quantum Technology Hub for Sensors and Metrology
Hastie, J., Arnold, A., Griffin, P., Kemp, A. & Riis, E.
EPSRC (Engineering and Physical Sciences Research Council)
1/12/14 → 30/11/19
Project: Research

Data for: "Towards a compact, optically-interrogated, cold-atom microwave clock"
Elvin, R. (Creator), Wright, M. (Contributor), Hoth, G. (Contributor), Lewis, B. (Contributor), Bregazzi, A. (Contributor), Keliehor, B. (Contributor), Arnold, A. (Contributor), Griffin, P. (Contributor) & Riis, E. (Contributor), University of Strathclyde, 17 Sep 2020
DOI: 10.15129/4e8355df-93df-4157-a0cb-44953ff3dd20
Dataset

Cite this

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title = "Towards a compact, optically-interrogated, cold-atom microwave clock",

abstract = "A compact platform for cold atoms opens a range of exciting possibilities for portable, robust, and accessible quantum sensors. In this work we report on the development of a cold-atom microwave clock in a small package. Our work utilises the grating magneto-optical trap and high-contrast coherent population trapping in the lin⊥lin polarisation scheme. We optically probe the atomic round-state splitting of cold 87Rb atoms using a Ramsey-like sequence whilst the atoms are in free-fall. We have measured ashort-term fractional frequency stability of 5×10−11/√t with a projected quantum projection noise limit at the 10 −13/√t level.",

keywords = "CPT, atomic clock, coherent population trapping, cold atoms",

author = "Rachel Elvin and Wright, {Michael W.} and Ben Lewis and Keliehor, {Brendan L.} and Alan Bregazzi and McGilligan, {James P.} and Arnold, {Aidan S.} and Griffin, {Paul F.} and Erling Riis",

year = "2020",

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doi = "10.1515/aot-2020-0022",

language = "English",

volume = "9",

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T1 - Towards a compact, optically-interrogated, cold-atom microwave clock

AU - Elvin, Rachel

AU - Wright, Michael W.

AU - Lewis, Ben

AU - Keliehor, Brendan L.

AU - Bregazzi, Alan

AU - McGilligan, James P.

AU - Arnold, Aidan S.

AU - Griffin, Paul F.

AU - Riis, Erling

PY - 2020/10/31

Y1 - 2020/10/31

N2 - A compact platform for cold atoms opens a range of exciting possibilities for portable, robust, and accessible quantum sensors. In this work we report on the development of a cold-atom microwave clock in a small package. Our work utilises the grating magneto-optical trap and high-contrast coherent population trapping in the lin⊥lin polarisation scheme. We optically probe the atomic round-state splitting of cold 87Rb atoms using a Ramsey-like sequence whilst the atoms are in free-fall. We have measured ashort-term fractional frequency stability of 5×10−11/√t with a projected quantum projection noise limit at the 10 −13/√t level.

AB - A compact platform for cold atoms opens a range of exciting possibilities for portable, robust, and accessible quantum sensors. In this work we report on the development of a cold-atom microwave clock in a small package. Our work utilises the grating magneto-optical trap and high-contrast coherent population trapping in the lin⊥lin polarisation scheme. We optically probe the atomic round-state splitting of cold 87Rb atoms using a Ramsey-like sequence whilst the atoms are in free-fall. We have measured ashort-term fractional frequency stability of 5×10−11/√t with a projected quantum projection noise limit at the 10 −13/√t level.

KW - CPT

KW - atomic clock

KW - coherent population trapping

KW - cold atoms

U2 - 10.1515/aot-2020-0022

DO - 10.1515/aot-2020-0022

M3 - Article

VL - 9

SP - 297

EP - 303

IS - 5

ER -

Towards a compact, optically-interrogated, cold-atom microwave clock

Abstract

Keywords

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UK Quantum Technology Hub for Sensors and Metrology

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Data for: "Towards a compact, optically-interrogated, cold-atom microwave clock"

Cite this