论文标题
通过超导量子量子的模拟猫态在芯片上的模拟量子控制
Analog quantum control of magnonic cat states on-a-chip by a superconducting qubit
论文作者
论文摘要
我们建议在附近的磁性粒子中直接和量子耦合到镁的超导式转移量子置量量子 - 集体自旋激发的量子。磁铁的杂散场通过超导量子干扰装置（squid）伴侣将其与Qubit融合在一起。我们预测谐振量子 - 磁通交易所和非线性辐射压力相互作用都比耗散速率强，并且可以通过外部磁通偏置来调整。我们还展示了一种量子控制方案，该方案产生了高富度性的Qubit-Magnon纠缠和MagnonicschrödingerCat状态。
We propose to directly and quantum-coherently couple a superconducting transmon qubit to magnons - the quanta of the collective spin excitations, in a nearby magnetic particle. The magnet's stray field couples to the qubit via a superconducting quantum interference device (SQUID). We predict a resonant qubit-magnon exchange and a nonlinear radiation-pressure interaction that are both stronger than dissipation rates and tunable by an external flux bias. We additionally demonstrate a quantum control scheme that generates qubit-magnon entanglement and magnonic Schrödinger cat states with high fidelity.
