Sensitivity to New Physics with Quantum Acoustics

by Dr Mukul Sholapurkar (Vienna, OAW)

Wednesday 11 Jun 2025, 14:30 → 16:00 Europe/Rome

1/1-2 - Aula "C. Voci" (Dipartimento di Fisica e Astronomia - Edificio Marzolo)

Phonons are an important sensing channel to look for new physics. Recent advances in the field of quantum acoustics allow the control of individual GHz phonons. The detector we consider in this seminar is composed of superconducting transmon qubits coupled to high-overtone bulk acoustic resonators (hBARs), and operates in the GHz - 10 GHz frequency range. Sensitivity to new physics that excites phonons in this frequency range within the hBAR can then be achieved by reading out qubit excitations. I will briefly discuss the details of this technology before showing the expected sensitivity to new physics signals. In particular, I will talk about signals from dark photon dark matter and high frequency gravitational waves, where we find that a future detector can complement current haloscope experiments.