Thin film aluminum nitride surface acoustic wave resonators for quantum acoustodynamics
Thin film aluminum nitride surface acoustic wave resonators for quantum acoustodynamics
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DOI：
10.1063/5.0158083
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发表时间：
2023-04
影响因子：
4
通讯作者：
Wenhui Jiang;Junfeng Chen;Xiaoyu Liu;Z. Niu;Kuang Liu;W. Peng;Zhen Wang;Zhirong Lin
中科院分区：
文献类型：
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作者：
Wenhui Jiang;Junfeng Chen;Xiaoyu Liu;Z. Niu;Kuang Liu;W. Peng;Zhen Wang;Zhirong Lin
宏观声表面波(SAW)的量子激发已经被定制用于控制、通信和转换静止和飞行的量子态。然而，这些混合量子系统有限的寿命仍然是扩大其在量子信息处理中应用的关键障碍。在这里，我们介绍了薄膜氮化铝到具有超导量子位的片上集成声子的势能，这些声子是在以前的压电体衬底上实现的。我们报道了高质量的薄膜GHz-SAW谐振器，在量子区内的最高内品质因数QI达到4.92×104。通过调节样品布局、功率和温度等参数，系统地研究了声表面波谐振器的内部损耗。我们的结果表明，压电薄膜上的声表面波很容易与约瑟夫森结量子电路的标准制作相结合，并为高相干量子声动力学结构提供了良好的声学平台。
Quantum excitations of macroscopic surface acoustic waves (SAWs) have been tailored to control, communicate, and transduce stationary and flying quantum states. However, the limited lifetime of these hybrid quantum systems remains critical obstacles to extend their applications in quantum information processing. Here, we present potentials of thin film aluminum nitride to on-chip integrated phonons with superconducting qubits over previous bulk piezoelectric substrates. We have reported high-quality thin film GHz-SAW resonators with the highest internal quality factor Qi of 4.92×104 in the quantum regime. The internal losses of SAW resonators are systematically investigated by tuning the parameters of sample layout, power, and temperature. Our results manifest that SAWs on piezoelectric films are readily integrated with standard fabrication of Josephson junction quantum circuits and offer excellent acoustic platforms for high-coherence quantum acoustodynamics architectures.