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Julia Scherschligt (Fed)

Dr. Julia Scherschligt is an expert in metrology with decades of experience in instrument science including pressure and vacuum, cryogenics, high magnetic fields, and radiometry. She is the chair of the Working Group for Pressure and Vacuum in the Consultative Committee for Mass and Related Quantities (CCM-WGPV) which is the international organization responsible for ensuring equivalence across different laboratories in realization and dissemination of the pascal. She has served in a variety of additional roles, including as NIST liaison to the NCSLi, NIST representative to the CCM-WGPV, Leader of the Fundamental Thermodynamics Group at NIST, and is chair-elect of the AVS Vacuum Technology Division.

Since joining NIST in 2007, Dr. Scherschligt’s career has including technical, scientific, and managerial responsibilities. Her research interests focus on using tools from quantum physics to develop technologies with real-world applications. She has had an active research program in realizing the pascal at ultra and extreme high vacuum based using cold trapped atoms, and as group leader, has worked to grow additional programs in quantum, photonics, and optomechanics-based technology applications. She is a Fellow of the AVS, and has won the NIST Safety Award, the NIST Judson C. French Award, and a NIST Bronze Medal. She is currently on detail in PML headquarters.

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

Precise Quantum Measurement of Vacuum with Cold Atoms

Author(s)
Daniel Barker, Bishnu Acharya, James A. Fedchak, Nikolai Klimov, Eric Norrgard, Julia Scherschligt, Eite Tiesinga, Stephen Eckel
We describe the cold-atom vacuum standards (CAVS) under development at the National Institute of Standards and Technology. The CAVS measures pressure in the

A constant pressure flowmeter for the extremely high vacuum

Author(s)
Stephen Eckel, Daniel Barker, James A. Fedchak, Emmanuel Newsome, Julia Scherschligt, Robert E. Vest
We demonstrate operation of a constant-pressure flowmeter capable of generating and accurately measuring flows as low as $1\times10^-13}$mol/s. Generation of

Comparison of two multiplexed portable cold atom vacuum standards

Author(s)
Lucas Ehinger, Bishnu Acharya, Daniel Barker, James A. Fedchak, Julia Scherschligt, Eite Tiesinga, Stephen Eckel
We compare the vacuum measured by two portable cold atom vacuum standards (pCAVS) based on ultracold $^7$Li atoms. Our pCAVS devices share the same laser system

Patents (2018-Present)

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
Created October 9, 2019, Updated February 6, 2025