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Christopher L. Holloway (Fed)

RF Fields Group Leader

Since 2000 Dr. Holloway has been with the National Institute of Standards and Technology (NIST), Boulder, CO, where he works on electromagnetic theory. He is also on the Graduate Faculty at the University of Colorado at Boulder. Dr. Holloway was awarded the 1999 Department of Commerce Silver Medal for his work in electromagnetic theory and the 1998 Department of Commerce Bronze Medal for his work on printed circuit boards. His research interests include electromagnetic field theory, wave propagation, guided wave structures, remote sensing, numerical methods, and EMC/EMI issues. Dr. Holloway is a member of Commission A of the International Union of Radio Science and is an Associate Editor for the IEEE Transactions on Electromagnetic Compatibility. Dr. Holloway is the chairman for the Technical Committee on Computational Electromagnetic (TC-9) of the IEEE Electromagnetic Compatibility Society. 

View Dr. Holloway's talk on student opportunities at NIST. 


Rydberg Atoms for One-Step Traceability for Sensing Electric Fields

Aly Artusio-Glimpse, Christopher L. Holloway, Matt Simons, Nik Prajapati, Drew Rotunno, Samuel Berweger, Kaleb Campbell, Maitreyi Jayaseelan
Absolute electric field measurements present a "chicken-and-egg" situation where calibration of field probes relies on accurate knowledge of the field while

Quantum Blackbody Thermometry

Eric B. Norrgard, Stephen Eckel, Christopher L. Holloway, Eric L. Shirley
Blackbody radiation (BBR) sources are calculable radiation sources that are frequently used in radiometry, temperature dissemination, and remote sensing

Blackbody Radiation Noise Broadening of Quantum Systems

Eric B. Norrgard, Stephen Eckel, Christopher L. Holloway, Eric L. Shirley
Precision measurements of quantum systems often seek to probe or must account for the interaction with blackbody radiation. Over the past several decades, much

Patents (2018-Present)

Atomic Vapor Cell And Making An Atomic Vapor Cell

NIST Inventors
Christopher L. Holloway , Aly Artusio-Glimpse , Vladimir Aksyuk , Matt Simons and John Kitching
Research over the past ten years into atomic sensors has allowed for controlled ensembles of room temperature atoms in such a manner that we are able to develop interesting and unique devices. Beside SI traceable E-field probes, other applications range from atom-based receivers to imaging
Description of Patent 11,165,505

Quantum Atomic Receiving Antenna and Quantum Sensing of Radiofrequency Radiation

NIST Inventors
Josh Gordon and Christopher L. Holloway
A quantum atomic receiving antenna includes: a probe laser; a coupling laser; an atomic vapor cell that includes: a spherically shaped or parallelepiped-shaped atomic vapor space and Rydberg antenna atoms. These undergo a radiofrequency Rydberg transition to produce quantum antenna light from probe
Block diagram of the Rydberg atom "mixer". The Rydberg atoms separate the difference frequency (IF) from two RF signals (LO and SIG). This demodulated signal is carried in the probe laser.

Rydberg Atom Mixer and Determining Phase of Modulated Carrier Radiation

NIST Inventors
Josh Gordon , Christopher L. Holloway and Matt Simons
A Rydberg atom mixer determines a phase of modulated carrier radiation and includes: a reference radiofrequency source for reference radiofrequency radiation; a modulated carrier source for modulated carrier radiation; a vapor cell to contain gas atoms and that receives reference radiofrequency
Created October 9, 2019, Updated December 8, 2022