Kavli Affiliate: Noah A. Kurinsky
| First 5 Authors: Caleb W. Fink, Chiara Salemi, Betty A. Young, David I. Schuster, Noah A. Kurinsky
| Summary:
With great interest from the quantum computing community, an immense amount
of R&D effort has been invested into improving superconducting qubits. The
technologies developed for the design and fabrication of these qubits can be
directly applied to applications for ultra-low threshold particle detectors,
e.g. low-mass dark matter and far-IR photon sensing. We propose a novel sensor
based on the transmon qubit architecture combined with a signal-enhancing
superconducting quasiparticle amplification stage. We refer to these sensors as
SQUATs: Superconducting Quasiparticle-Amplifying Transmons. We detail the
operating principle and design of this new sensor and predict that with minimal
R&D effort, solid-state based detectors patterned with these sensors can
achieve sensitivity to single THz photons, and sensitivity to $1,mathrm{meV}$
phonons in the detector absorber substrate on the $mumathrm{s}$ timescale.
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