A grating-chip atomic fountain

Ben Lewis, Rachel Elvin, Aidan S. Arnold, Erling Riis, Paul F. Griffin

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
24 Downloads (Pure)

Abstract

Cold atom fountain clocks provide exceptional long term stability as they increase interrogation time at the expense of a larger size. We present a compact cold atom fountain using a grating magneto-optical trap (GMOT) to laser cool and launch the atoms in a simplified optical setup. The fountain is evaluated using coherent population trapping and demonstrates improved single-shot stability from the launch. Ramsey times up to 100ms were measured with a corresponding fringe linewidth of 5Hz. This technique could improve both short and long-term stability of cold atom clocks while remaining compact for portable applications.
Original languageEnglish
Article number164001
Number of pages5
JournalApplied Physics Letters
Volume121
Issue number16
DOIs
Publication statusPublished - 21 Oct 2022

Keywords

  • cold atom clocks
  • cold atom fountain
  • magneto-optical trap
  • grating chip

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