论文标题
表面声波声子的挤压和多模
Squeezing and multimode entanglement of surface acoustic wave phonons
论文作者
论文摘要
在量子声设备中利用多种模式可以在硬件有效的设置中启用量子信息中的应用，包括在合成维度中使用群集状态的量子模拟和连续可变的量子计算。我们开发了多模码表面声波（SAW）与超顺量量子干扰装置（SAW）的谐振器（SAW）谐振器（SAW）的谐振器（SAW）。与鱿鱼般的镜像的相互作用会导致20多个可访问的谐振器模式之间的耦合。我们利用这种耦合来证明锯声子的两种模式挤压以及四模式多部分纠缠。我们的结果开放了紧凑型混合量子系统中连续可变量子计算的途径。
Exploiting multiple modes in a quantum acoustic device could enable applications in quantum information in a hardware-efficient setup, including quantum simulation in a synthetic dimension and continuous-variable quantum computing with cluster states.We develop a multimode surface acoustic wave (SAW) resonator with a superconducting quantum interference device (SQUID) integrated in one of the Bragg reflectors. The interaction with the SQUID-shunted mirror gives rise to coupling between the more than 20 accessible resonator modes. We exploit this coupling to demonstrate two-mode squeezing of SAW phonons, as well as four-mode multipartite entanglement. Our results open avenues for continuous-variable quantum computing in a compact hybrid quantum system.
