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Stephen Eckel (Fed)

An expert in cold atom sensing and precision measurement with over sixty published papers and six patents, Stephen Eckel’s current research focuses on using the immutable properties of atoms and molecules to make calibration-free sensors for both temperature and pressure. In 2016, he started as a permanent research physicist at the National Institute of Standards and Technology (NIST) in the Fundamental Thermodynamics Group developing the cold atom vacuum standard, the only primary standard of vacuum pressure in the ultra-high and extreme-high vacuum regimes. Prior to 2016, he was National Research Council Postdoctoral Fellow at the Joint Quantum Institute, a collaborative institute between NIST and the University of Maryland, where he was a working on inertial sensing using ring-shaped Bose-Einstein condensates. He graduated from Yale University with a Ph.D. in Physics in 2012 where his research focused on two different precision measurement searches for the electron’s electric dipole moment.

In 2024, he was awarded the prestigious Presidential Early Career Award for Scientists and Engineers "for his pioneering work in applying cold-atom physics to solve real-world measurement problems, investigating the enabling physics, and leading the development of the first deployable, practical cold-atom-based device with applications outside the laboratories of academia".

Highlights

Awards

Publications

Effect of ''glancing'' collisions in the cold atom vacuum standard

Author(s)
Stephen Eckel, Daniel Barker, James A. Fedchak, Jacek Klos, Julia Scherschligt, Eite Tiesinga
We theoretically investigate the effect of "glancing" collisions on the ultra-high-vacuum pressure readings of the cold-atom vacuum standard (CAVS), based on

Primary quantum thermometry of mm-wave blackbody radiation via induced state transfer in Rydberg states of cold atoms

Author(s)
Noah Schlossberger, Andrew Rotunno, Stephen Eckel, Eric Norrgard, Dixith Manchaiah, Nikunjkumar Prajapati, Alexandra Artusio-Glimpse, Samuel Berweger, Matthew Simons, Dangka Shylla, William Watterson, Charles Patrick, Adil Meraki, Rajavardhan Talashila, Amanda Younes, David La Mantia, Christopher Holloway
Rydberg states of alkali-metal atoms are highly sensitive to electromagnetic radiation in the GHz-to-THz regime because their transitions have large electric di

Spectroscopy of laser cooling transitions in MgF

Author(s)
Nickolas Pilgram, Benjamin Baldwin, David La Mantia, Stephen Eckel, Eric Norrgard
We measure the complete set of transition frequencies necessary to laser cool and trap MgF molecules. Specifically, we report the frequency of multiple low $J$

Patents (2018-Present)

Optomechanical Pressure Measurement System And Method Using The Vibrational Modes Of A Membrane

NIST Inventors
Stephen Eckel , James A. Fedchak , Thomas Purdy and Robinjeet Singh
An optomechanical pressure-measurement system measures pressure in the range of 10.sup.−6 Pa-10.sup.−2 Pa by measuring various properties of a vibrational mode of an ultra-thin membrane member. With independent measurements of the thickness and density of the membrane, in addition to the measured

Uniaxial Counter-Propagating Monolaser Atom Trap

NIST Inventors
Stephen Eckel , James A. Fedchak , Julia Scherschligt , Daniel Barker , Eric Norrgard and Nikolai Klimov
A uniaxial counter-propagating monolaser atom trap cools and traps atoms with a single a laser beam and includes: an atom slower that slows atoms to form slowed atoms; an optical diffractor including: a first diffraction grating that receives primary light and produces first reflected light; a

Optical Refraction Barometer

NIST Inventors
Kevin O Douglass , Stephen Eckel , Jacob Edmond Ricker and Jay H. Hendricks
A new method for measuring refractivity-based pressure changes using a dual Fabry-Perot cavity utilizing a single laser with off-set sideband locking to the second cavity. The method thus far has shown sensitivity and resolution of 4 mPa.
Image for 10,816,325

Deformometer for Determining Deformation of an Optical Cavity Optic

NIST Inventors
Zeeshan Ahmed , Kevin O Douglass , Stephen Eckel , Patrick Egan and Jay H. Hendricks
A superconducting waveform synthesizer produces an arbitrary waveform and includes an encoder that produces a bitstream; a pattern generator that produces a current bias pulse from the bitstream; a Josephson junction that produces a quantized output pulse from the current bias pulse; and a converter

Selected Blog Posts

Created July 30, 2019, Updated February 26, 2025