Circuit quantum acoustodynamics with surface acoustic waves
(2017)
Simultaneous bistability of qubit and resonator in circuit quantum electrodynamics
Physical Review Letters American Physical Society (2017)
Simultaneous bistability of qubit and resonator in circuit quantum electrodynamics
(2016)
Surface acoustic wave resonators in the quantum regime
Physical Review B American Physical Society 93:4 (2016)
Abstract:
We present systematic measurements of the quality factors of surface acoustic wave (SAW) resonators on ST-X quartz in the gigahertz range at a temperature of 10mK. We demonstrate an internal quality factor Qi approaching 0.5 million at 0.5GHz and show that Qi≥4.0×104 is achievable up to 4.4GHz. We show evidence for a polynomial dependence of propagation loss on frequency, as well as a weak drive power dependence of Qi that saturates at low power, the latter being consistent with coupling to a bath of two-level systems. Our results indicate that SAW resonators are promising devices for integration with superconducting quantum circuits.Quantum Acoustics with Surface Acoustic Waves
Springer International Publishing (2016) 217-244