论文标题
超导量子的声学辐射：从自发发射到拉比振荡
Acoustic radiation from a superconducting qubit: From spontaneous emission to Rabi oscillations
论文作者
论文摘要
声学自发发射到块状介电时可能是量子装置中的强大反应来源，尤其是在存在压电材料存在的量子位时。我们研究通过压电膜与声学谐振器耦合的量子动力学。通过将谐振器的表面形貌从粗糙到抛光到形状，我们探索了从激发量子的快速衰减到量子和孤立的声子模式之间的量子互连续耦合的交叉。我们的实验方法可用于精确测量晶体振动，量子记忆的设计以及对电介质损失的电力贡献的研究。
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.
