102 k Large Area Atom Interferometers

Sheng Wey Chiow*, Timothy Light Kovachy, Hui Chun Chien, Mark A. Kasevich

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

243 Scopus citations


We demonstrate atom interferometers utilizing a novel beam splitter based on sequential multiphoton Bragg diffractions. With this sequential Bragg large momentum transfer (SB-LMT) beam splitter, we achieve high contrast atom interferometers with momentum splittings of up to 102 photon recoil momenta (102 k). To our knowledge, this is the highest momentum splitting achieved in any atom interferometer, advancing the state-of-the-art by an order of magnitude. We also demonstrate strong noise correlation between two simultaneous SB-LMT interferometers, which alleviates the need for ultralow noise lasers and ultrastable inertial environments in some future applications. Our method is intrinsically scalable and can be used to dramatically increase the sensitivity of atom interferometers in a wide range of applications, including inertial sensing, measuring the fine structure constant, and detecting gravitational waves.

Original languageEnglish (US)
Article number130403
JournalPhysical review letters
Issue number13
StatePublished - Sep 19 2011

ASJC Scopus subject areas

  • General Physics and Astronomy


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