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An atomic array optical clock with single-atom readout

Madjarov, Ivaylo S. and Cooper, Alexandre and Shaw, Adam L. and Covey, Jacob P. and Schkolnik, Vladimir and Yoon, Tai Hyun and Williams, Jason R. and Endres, Manuel (2019) An atomic array optical clock with single-atom readout. Physical Review X, 9 (4). Art. No. 041052. ISSN 2160-3308. doi:10.1103/PhysRevX.9.041052.

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Currently, the most accurate and stable clocks use optical interrogation of either a single ion or an ensemble of neutral atoms confined in an optical lattice. Here, we demonstrate a new optical clock system based on an array of individually trapped neutral atoms with single-atom readout, merging many of the benefits of ion and lattice clocks as well as creating a bridge to recently developed techniques in quantum simulation and computing with neutral atoms. We evaluate single-site resolved frequency shifts and short-term stability via self-comparison. Atom-by-atom feedback control enables direct experimental estimation of laser noise contributions. Results agree well with an ab initio Monte Carlo simulation that incorporates finite temperature, projective read-out, laser noise, and feedback dynamics. Our approach, based on a tweezer array, also suppresses interaction shifts while retaining a short dead time, all in a comparatively simple experimental setup. These results establish the foundations for a third optical clock platform suited to advance stationary and transportable clock systems, while providing a novel starting point for entanglement-enhanced metrology and quantum clock networks as well as applications in quantum computing and communication with individual neutral atoms requiring optical clock state control.

Item Type:Article
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URLURL TypeDescription Paper InPhysics : Viewpoint InCaltech News
Cooper, Alexandre0000-0002-8759-9647
Shaw, Adam L.0000-0002-8059-5950
Covey, Jacob P.0000-0001-5104-6883
Endres, Manuel0000-0002-4461-224X
Additional Information:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. (Received 4 September 2019; revised manuscript received 23 October 2019; published 11 December 2019) We acknowledge funding provided by the Institute for Quantum Information and Matter, a NSF Physics Frontiers Center (NSF Grant No. PHY-1733907). This work was supported by the NSF (Grant No. 1753386), the AFOSR YIP (Grant No. FA9550-19-1-0044), and the Sloan Foundation. This research was carried out at the Jet Propulsion Laboratory and the California Institute of Technology under a contract with the National Aeronautics and Space Administration and funded through the Presidents and Directors Research and Development Fund (PDRDF). T. H. Y. acknowledges support from the National Research Foundation of Korea Grant No. NRF-2019009974. We acknowledge generous support from Fred Blum.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)FA9550-19-1-0044
Alfred P. Sloan FoundationUNSPECIFIED
JPL President and Director's FundUNSPECIFIED
National Research Foundation of Korea2019009974
Issue or Number:4
Record Number:CaltechAUTHORS:20191022-085737494
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99384
Deposited By: Tony Diaz
Deposited On:22 Oct 2019 20:27
Last Modified:28 Feb 2023 19:36

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