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Johannes Hubmayr (Fed)

Dr. Johannes Hubmayr is an experimental physicist and Group Leader in the Quantum Electromagnetics Division. He joined NIST in 2010. His Group designs and micro-fabricates custom cryogenic sensor arrays and multiplexed readout for applications in cosmology, astrophysics, security, and increasingly in support of quantum information science. In one research theme, the Group works in large scientific collaborations to build millimeter-wave cameras that make exquisite measurements of the cosmos to understand fundamental physics, how the universe began, how it has evolved, and to determine the values of cosmological parameters such as the physical baryon density to high precision. Dr. Hubmayr’s areas of technical expertise include large-format cryogenic focal planes, transition edge sensor (TES) bolometers, microwave kinetic inductance detectors (MKIDs), millimeter-wave polarimetry, SQUID multiplexed cryogenic readout, microfabrication design, and millimeter-wave feedhorns. As of early 2023, Dr. Hubmayr’s 300+ scientific publications have been cited 11,400+ times.

Google Scholar Profile

Research Interests

  • Ultra-sensitive measurements in the millimeter to far-infrared
  • Millimeter-wave polarimetry
  • Cosmology via precision measurements of the Cosmic Microwave Background (CMB)
  • Multiplexed cryogenic power sensors

Awards

Publications

280-GHz aluminum MKID arrays for the Fred Young Submillimeter Telescope

Author(s)
Anna Vaskuri, Jordan Wheeler, Jason Austermann, Michael Vissers, James Beall, James R. Burgoyne, Victoria Butler, Scott Chapman, Steve K. Choi, Abigail Crites, Cody J. Duell, Rodrigo Freundt, Anthony Huber, Zachary Huber, Johannes Hubmayr, Jozsef Imrek, Ben Keller, Lawrence Lin, Alicia Middleton, Michael D. Niemack, Thomas Nikola, Douglas Scott, Adrian Sinclair, Ema Smith, Gordon Stacey, Joel Ullom, Jeffrey Van Lanen, Eve Vavagiakis, Samantha Walker, Bugao Zou
First light observations of the 280 GHz instrument module of the Fred Young Submillimeter Telescope (FYST) in the CCAT Collaboration are expected in 2026. The

EMI susceptibility of a differential time-division SQUID multiplexing circuit for TES readout

Author(s)
Malcolm Durkin, Douglas Bennett, William Doriese, Johnathon Gard, Johannes Hubmayr, Richard Lew, Erin Maloney, Carl Reintsema, Robinjeet Singh, Daniel Schmidt, Joel Ullom, Leila Vale, Michael Vissers
Time Division multiplexing (TDM) using superconducting quantum interference devices (SQUIDs) is being developed to read out Transition-edge sensor arrays for

A High-Capacity Microwave SQUID Multiplexer Chip Screening System

Author(s)
Zachary Whipps, Jake A. Connors, Bradley Dober, Johannes Hubmayr, John Mates, Caleb Wheeler, John Groh, Jason Austermann, Leila Vale, Gene C. Hilton, Jiansong Gao, Shannon Duff, Joel Ullom, Ed Denison
The microwave SQUID multiplexer ($\mu$MUX) is a high channel-count multiplexer that, when coupled to low-temperature detectors such as Transition Edge Sensor
Created July 30, 2019, Updated October 11, 2023
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