Towards a compact atomic clock based on coherent population trapping and the grating magneto-optical trap

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Abstract

The combination of coherent population trapping (CPT) and laser cooled atoms is a promising platform for realizing the next generation of compact atomic frequency references. Towards this goal, we have developed an apparatus based on the grating magneto-optical trap (GMOT) and the high-contrast lin ⊥ lin CPT scheme in order to explore the performance that can be achieved. One important trade-off for cold-atom systems arises from the need to simultaneously maximize the number of cold atoms available for interrogation and the repetition rate of the system. This compromise can be mitigated by recapturing cold atoms from cycle to cycle. Here, we report a quantitative characterization of the cold atom number in the recapture regime for our system, which will enable us to optimize this trade-off. We also report recent measurements of the short-term frequency stability with a short-term Allan deviation of 3 × 10-11/τ up to an averaging time of τ = 10 s.
LanguageEnglish
Pages109342E
Number of pages8
DOIs
Publication statusPublished - 1 Mar 2019
EventSPIE Photonics West OPTO - San Francisco, United States
Duration: 2 Feb 20197 Feb 2019

Conference

ConferenceSPIE Photonics West OPTO
Abbreviated titlePhotonics WEST
CountryUnited States
Period2/02/197/02/19

Fingerprint

atomic clocks
trapping
traps
gratings
atoms
cycles
frequency stability
interrogation
repetition
platforms
deviation
lasers

Keywords

  • coherent population trapping
  • grating magneto-optical traps
  • microwave atomic clock
  • laser cooling
  • cold-atoms
  • micro-fabricated grating chips

Cite this

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title = "Towards a compact atomic clock based on coherent population trapping and the grating magneto-optical trap",
abstract = "The combination of coherent population trapping (CPT) and laser cooled atoms is a promising platform for realizing the next generation of compact atomic frequency references. Towards this goal, we have developed an apparatus based on the grating magneto-optical trap (GMOT) and the high-contrast lin ⊥ lin CPT scheme in order to explore the performance that can be achieved. One important trade-off for cold-atom systems arises from the need to simultaneously maximize the number of cold atoms available for interrogation and the repetition rate of the system. This compromise can be mitigated by recapturing cold atoms from cycle to cycle. Here, we report a quantitative characterization of the cold atom number in the recapture regime for our system, which will enable us to optimize this trade-off. We also report recent measurements of the short-term frequency stability with a short-term Allan deviation of 3 × 10-11/τ up to an averaging time of τ = 10 s.",
keywords = "coherent population trapping, grating magneto-optical traps, microwave atomic clock, laser cooling, cold-atoms, micro-fabricated grating chips",
author = "Hoth, {Gregory W.} and Rachel Elvin and Michael Wright and Ben Lewis and Arnold, {Aidan S.} and Griffin, {Paul F.} and Erling Riis",
year = "2019",
month = "3",
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doi = "10.1117/12.2516612",
language = "English",
pages = "109342E",
note = "SPIE Photonics West OPTO, Photonics WEST ; Conference date: 02-02-2019 Through 07-02-2019",

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T1 - Towards a compact atomic clock based on coherent population trapping and the grating magneto-optical trap

AU - Hoth, Gregory W.

AU - Elvin, Rachel

AU - Wright, Michael

AU - Lewis, Ben

AU - Arnold, Aidan S.

AU - Griffin, Paul F.

AU - Riis, Erling

PY - 2019/3/1

Y1 - 2019/3/1

N2 - The combination of coherent population trapping (CPT) and laser cooled atoms is a promising platform for realizing the next generation of compact atomic frequency references. Towards this goal, we have developed an apparatus based on the grating magneto-optical trap (GMOT) and the high-contrast lin ⊥ lin CPT scheme in order to explore the performance that can be achieved. One important trade-off for cold-atom systems arises from the need to simultaneously maximize the number of cold atoms available for interrogation and the repetition rate of the system. This compromise can be mitigated by recapturing cold atoms from cycle to cycle. Here, we report a quantitative characterization of the cold atom number in the recapture regime for our system, which will enable us to optimize this trade-off. We also report recent measurements of the short-term frequency stability with a short-term Allan deviation of 3 × 10-11/τ up to an averaging time of τ = 10 s.

AB - The combination of coherent population trapping (CPT) and laser cooled atoms is a promising platform for realizing the next generation of compact atomic frequency references. Towards this goal, we have developed an apparatus based on the grating magneto-optical trap (GMOT) and the high-contrast lin ⊥ lin CPT scheme in order to explore the performance that can be achieved. One important trade-off for cold-atom systems arises from the need to simultaneously maximize the number of cold atoms available for interrogation and the repetition rate of the system. This compromise can be mitigated by recapturing cold atoms from cycle to cycle. Here, we report a quantitative characterization of the cold atom number in the recapture regime for our system, which will enable us to optimize this trade-off. We also report recent measurements of the short-term frequency stability with a short-term Allan deviation of 3 × 10-11/τ up to an averaging time of τ = 10 s.

KW - coherent population trapping

KW - grating magneto-optical traps

KW - microwave atomic clock

KW - laser cooling

KW - cold-atoms

KW - micro-fabricated grating chips

U2 - 10.1117/12.2516612

DO - 10.1117/12.2516612

M3 - Proceeding

SP - 109342E

ER -