NCNR - Key Persons


A. Collopy

Job Titles:
  • Credit
Alejandra is a postdoc working on the magtrap experiment. She did her Ph.D. in Jun Ye's group at JILA implementing a magneto-optical trap of neutral diatomic molecules. She has also worked on the room temperature molecular spectroscopy experiment in the Ion Storage group as an NRC postdoc. Awards 2021 - Bronze Medal Award---Chin-wen Chou, David Hume, David Leibrandt, Dietrich Leibfried, Tara Fortier, Scott Diddams, Alejandra Collopy

Adam Brandt


Adela Mae Ochinang


Aidan Montare

Job Titles:
  • Electronics Engineer at NIST 's Time
Aidan Montare is an electronics engineer at NIST's Time and Frequency Division in Boulder, Colorado. Aidan works to improve and develop NIST's remote calibration services, and researches new time transfer systems. Aidan is also a member of the Ham Radio Citizen Science Investigation (HamSCI), where she works to make NIST's time and frequency services useful to scientists studying the upper atmospheric and space physics. She is a graduate of Case Western Reserve University in Cleveland, Ohio, and an alumni of the Case Amateur Radio Club W8EDU.

Alexa Carollo


Alexander Lind


Alexander Staron


Allison Carter

Job Titles:
  • Staff Scientist
Allison Carter is a staff scientist in the Ion Storage Group working on quantum sensing and simulations with large crystals of ions in a Penning trap. She is interested in the use of trapped ions as a quantum information platform and in developing techniques for improving quantum information processing with trapped ions. Before joining NIST, she worked on developing a trapped ion quantum network, with a focus on improving the efficiency of the photonic connections used for establishing entanglement between ions in separate traps. She earned her PhD on this research from the University of Maryland in 2021.

Andrew Attar


Andrew Ferdinand


Andrew Ludlow

Job Titles:
  • Group Leader ( Acting )
Andrew Ludlow is a physicist and leader of the Neutral Atom Optical Clock Group in the Physical Measurement Laboratory at the National Institute of Standards and Technology in Boulder. He is also a lecturer and adjoint professor at the University of Colorado Boulder, and a senior investigator in Q-SEnSE. His main research interests include the development of optical atomic clocks, cold atom systems for quantum metrology, ultrastable optical sources and laser interferometry, and the application of these systems to fundamental physics studies and advanced technology. He received a Ph.D. in Physics from the University of Colorado Boulder in 2008 and a B.S. in Physics from Brigham Young University in 2002. Andrew is a Fellow of the American Physical Society, and is the recipient of various awards for his research activity including the APS Pipkin Award, the Arthur S. Flemming Award, the Presidential Early Career Award, the EFTF Young Scientist Award, and the APS DAMOP Thesis Prize.

Andrew Novick

Job Titles:
  • Electrical Engineer
Andrew Novick has been employed in the Time and Frequency Division since 1998. He began working in the division as a student at the University of Colorado, Boulder in 1987 and continued as an associate until becoming a federal employee. He makes onsite measurements and calibrations and also builds and deploys remote measurement systems for time and frequency calibration services. Andrew also is the Time and Frequency Division Quality Manager, maintaining the division's quality documents.

Anectus Ndunguru


Angela Liefer

Job Titles:
  • Group Office Manager

Archita Hati

Job Titles:
  • Electronics Engineer
Archita Hati is an Electronics Engineer and the calibration service leader of the Phase Noise Metrology Group in the Time and Frequency Division. Her research focuses on precision phase and amplitude noise metrology, designing high spectral purity oscillators and frequency synthesizers, and vibration-induced noise metrology. She is currently involved in the design and development of low-noise X-band oscillators, and a new secondary noise standard for phase and amplitude noise calibrations. She is an Associate Editor for the IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, and a member of the International Union of Radio Science (URSI) Commission A and the IEEE International Frequency Control Symposium technical committees.

Atasi Dan


Baruch Margulis

Baruch is a Rothschild postdoctoral fellow working on the cryogenic molecular ions experiment. He got his PhD in 2023 from the Weizmann Institute in Israel investigating scattering resonances in cold molecular collisions. When not in the lab he enjoys hiking with his family and cooking.

Benjamin Hunt


Benjamin Walker


Bijunath Patla


Bryce Bullock


Carter Mashburn


Charles McLemore


Chin-wen Chou


Chris Fujita


Christina Bowers


Connor Fredrick


Craig Nelson

Job Titles:
  • Group Leader

Dahyeon Lee


Dalton Chaffee


Daniel Rodriguez Castillo


Daniel Slichter


David Carlson


David Hume


David Leibrandt


Dietrich Leibfried


Douglas Bopp


Dustin Hite


Elizabeth Donley

Job Titles:
  • Division Chief
  • Division Safety Representative

Eric Swiler


Eugene Tsao


F. Webber

Job Titles:
  • Credit

Franklyn Quinlan

Job Titles:
  • Group Leader

Gabriela Martinez


George Iskander


Glenn Nelson


Grant Brodnik


Gregory Hoth


Gregory Spektor


Guilherme De Andrade Garcia


Haixin Liu


Hannah Knaack


Igor Kudelin


Ingrid Zimmermann


Isaac Fan


Ivan Dickson


Jacob Siegel


James Erikson


James Spicer


Jeffrey Sherman

Job Titles:
  • Group Leader

Jennifer Black


Jennifer Lilieholm


Jenny Wu


Jizhao Zang


John J. Bollinger

Job Titles:
  • Group Leader

John Kitching

Job Titles:
  • Group Leader

Jose Valencia


Joseph Junca


Judah Levine


Jules Stuart


Justin Niedermeyer


Kaitlyn David


Katy Stephenson


Kelsey Light

Job Titles:
  • Administrative Assistant

Kelsey Rodriguez

Job Titles:
  • Division Secretary
  • Group Office Manager

Kristina Chang


Kyle Beloy


Ladan Arissian


Lauren Kennedy


Laurent Stephenson


Lindell Williams


Lindsay Sonderhouse


Marco Pomponio


Margaret Bruff


Mario Duenas


Mason Marshall


Matthew Heyrich


Matthew Hummon


Megan Kelleher


Morgan Falls

Job Titles:
  • Group Office Manager

Nate Phillips


Nathan Lysne


Nazanin Hoghooghi


Neil Ashby


Nicholas Nardelli


Peter Chang


Peter Riley


Petrina Potts

Job Titles:
  • Administrative Assistant

Philip Kent


Pooja Sekhar


Qingxin Ji


Roger Brown


Ryan Cole


Safra Niyaz


Scott Diddams


Scott Papp

Job Titles:
  • Group Leader

Sindhu Jammi


Susan Schima


Takuma Nakamura


Takumi Kobayashi


Tanner Grogan


Tara Fortier


Thomas Schibli


Tin Nghia Nguyen


Tobias Bothwell


Tom Heavner


Tom Parker


Travis Briles


Tristan Carlo Rojo


Tsung Han Wu


Vladislav Gerginov


Wesley Brand


Willa Dworschack


William Groman


William McGehee


William Yates


Yan Jin


Yang Li


Yifan Liu


Ying-Ju Wang


Yorick Andeweg


Youssef Hassan


Yu Liu


Zachary Newman


Zheng Luo


Zhexuan Gong


Zhimin Liu