A high-performance optical lattice clock based on bosonic atoms

Stefano Origlia, Mysore Srinivas Pramod, Stephan Schiller, Yeshpal Singh, Kai Bongs, Roman Schwarz, Ali Al-Masoudi, Sören Dörscher, Sofia Herbers, Sebastian Häfner, Uwe Sterr, Christian Lisdat

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Optical lattice clocks with uncertainty and instability in the 10- 17-range and below have so far been demonstrated exclusively using fermions. Here, we demonstrate a bosonic optical lattice clock with 3 x 10 10-18 instability and 2.0 x 10- 17 accuracy, both values improving on previous work by a factor 30. This was enabled by probing the clock transition with an ultra-long interrogation time of 4 s, using the long coherence time provided by a cryogenic silicon resonator, by careful stabilization of relevant operating parameters, and by operating at low atom density. This work demonstrates that bosonic clocks, in combination with highly coherent interrogation lasers, are suitable for high-accuracy applications with particular requirements, such as high reliability, transportability, operation in space, or suitability for particular fundamental physics topics. As an example, we determine the 88Sr - 87Sr isotope shift with 12 mHz uncertainty
Original languageEnglish
Article number053443
Number of pages11
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume98
Issue number5
DOIs
Publication statusPublished - 29 Nov 2018

Keywords

  • physics.atom-ph
  • quant-ph

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