Jul 16 – 26, 2022
US/Pacific timezone

Detecting Dark Matter with a Qubit

Jul 18, 2022, 7:00 PM
2h 20m
211 South Ballroom (HUB)

211 South Ballroom



Morgan Lynn (University of Chicago/Fermilab)


To perform experimental searches for low mass bosonic dark matter such as the hidden photon or axion, our group works to employ dielectric photonic bandgap cavities with a high quality factor to coherently accumulate the axion signal for readout using qubit-based single photon detectors. The advantage of the qubit-based detector is in overcoming the standard quantum noise limit through repeated quantum non-demolition measurements [1]. Other techniques being studied include preparing the dielectric cavity in a higher photon-number (n) Fock state to enhance the dark matter signal amplitude by a factor of (n+1). Given the large parameter space still unexplored by current dark matter searches, methods of tuning a resonant cavity by electronically controlling the magnetic field seen by a loop of two Josephson junctions is currently being studied.

[1] Dixit et al., Phys. Rev. Lett. 126, 141302 (2021)

In-person or Virtual? In-person

Primary authors

Dr Akash Dixit (University of Chicago) Ankur Agrawal (University of Chicago) Fang Zhao (Fermi National Accelerator Laboratory) Morgan Lynn (University of Chicago/Fermilab)


Aaron Chou (Fermi National Accelerator Laboratory) Prof. David Schuster (University of Chigao)

Presentation materials