Maximiliano Silva-Feaver

Experimental cosmology & particle physics — axion dark matter and CMB B-modes

I’m a Mossman Postdoctoral Fellow at Yale University, working at the intersection of particle physics and cosmology. I build and study ultra-sensitive instruments designed to detect faint signals from dark matter and the early universe.

My research has two main threads:

  • Axion dark matter detection (HAYSTAC, ALPHA): resonant RF detectors, and quantum-limited / quantum-enhanced readout
  • CMB instrumentation & analysis (Simons Observatory): readout performance, time-ordered preprocessing, noise modeling, and inflationary B-mode searches

I got into this field because I love turning big physics questions into real hardware and measurement—creative, hands-on science that’s as much about invention as it is about equations.

→ If you’d like to know a little bit more about me and my journey as a physicist, see About: /about/
→ For the science, see Research: /research/ and Projects: /projects/
→ For talks/videos, see Talks & Videos: /talks/

selected publications

  1. The Simons Observatory: Design, integration, and testing of the small aperture telescopes
    Nicholas Galitzki, Tran Tsan, Jake Spisak, and 8 more authors
    The Astrophysical Journal Supplement Series, 2024
  2. Phase drift monitoring for tone tracking readout of superconducting microwave resonators
    Maximiliano Silva-Feaver, Zeeshan Ahmed, Kam Arnold, and 5 more authors
    In Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 2022
  3. Simons Observatory Microwave SQUID Multiplexing Readout: Cryogenic RF Amplifier and Coaxial Chain Design
    Mayuri Sathyanarayana Rao, Maximiliano Silva-Feaver, Aamir Ali, and 33 more authors
    Journal of Low Temperature Physics, Mar 2020
  4. Dark matter axion search with HAYSTAC phase II
    Xiran Bai, MJ Jewell, J Echevers, and 8 more authors
    Physical Review Letters, Mar 2025
  5. Design overview of DM radio pathfinder experiment
    Maximiliano Silva-Feaver, Saptarshi Chaudhuri, Hsaio-Mei Cho, and 8 more authors
    IEEE Transactions on Applied Superconductivity, Mar 2016
  6. Comparison of NIST SA13a and SA4b SQUID array amplifiers
    Maximiliano Silva-Feaver, Kam Arnold, Darcy Barron, and 8 more authors
    Journal of Low Temperature Physics, Mar 2018