2022/11/14 by Vijay Jain, Vladislav D. Kurilovich, Jain, Vijay +18 · 2 citations
Engineering · Physics and Astronomy · #Acoustic Wave Resonator Technologies #FOS: Physical sciences #Mechanical and Optical Resonators #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum Physics (quant-ph) #Quantum, superfluid, helium dynamics #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.48550/arxiv.2211.07475
7 pages, 4 figures; 19 pages supplementary, 5 supplementary figures
arxiv created 2022/11/14 · openalex publication_date 2022/11/14 · arxiv updated 2022/11/15 · openalex created_date 2022/11/23 · openalex updated_date 2026/07/28
Acoustic spontaneous emission into bulk dielectrics can be a strong source of decoherence in quantum devices, especially when a qubit is in the presence of piezoelectric materials. We study the dynamics of a qubit coupled to an acoustic resonator by a piezoelectric film. By varying the surface topography of the resonator from rough to polished to shaped, we explore the crossover from fast decay of an excited qubit to quantum-coherent coupling between the qubit and an isolated phonon mode. Our experimental approach may be used for precision measurements of crystalline vibrations, the design of quantum memories, and the study of electro-mechanical contributions to dielectric loss.