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Roger Brown (Fed)

Roger Brown is a Physicist in the Neutral Atom Optical Clocks group in the Time & Frequency Division at NIST. His work focuses on the development of a transportable Ytterbium optical lattice clock. This project will contribute to the redefinition of the SI second, benchmark novel commercial and industrial optical clocks, and act as a quantum sensor to test the theory of General Relativity via geodetic measurements.

https://www.nist.gov/programs-projects/portable-optical-lattice-clock 

Full texts of all TF division publications: https://tf.nist.gov/general/publications.htm

Full publication list on Google Scholar  

Awards

Publications

Clock-line-mediated Sisyphus Cooling

Author(s)
Jacob Siegel, Benjamin Hunt, Tanner Grogan, Youssef Hassan, Kyle Beloy, Roger Brown, Andrew Ludlow, Chun-Chia Chen, Kurt Gibble
We demonstrate sub-recoil Sisyphus cooling using the long-lived 3P0 clock state in alkaline-earthlike ytterbium. A 1388 -nm optical standing wave nearly
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Patents (2018-Present)

Spherical Ion Trap and Trapping Ions

NIST Inventors
Jeffrey Sherman , David Hume and Roger Brown
A spherical ion trap includes a substrate and an ion aperture; two RF electrodes in electrostatic communication with an ion trapping region; RF ground electrodes in electrostatic communication with the ion trapping region; and the ion trapping region bounded by opposing RF electrodes and the RF
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Created July 7, 2020, Updated December 9, 2024