论文标题
在狂犬病驱动的超导码头中的多部分纠缠
Multipartite Entanglement in Rabi Driven Superconducting Qubits
论文作者
论文摘要
探索量子位高度连接的网络对于实施各种量子算法和仿真是无价的，因为它允许纠缠具有减少电路深度的Qubits。在这里，我们演示了一个多Qubit Star（侧带音调辅助Rabi驱动的门）。我们的方案灵感来自离子量子Mølmer-Sørensen门，并由共享的光子模式和Rabi-drive的超导量子台介导，这在制造过程中放松对量子频率的限制并支持可伸缩性。我们实现了一个两分的门，在310 ns中的最大状态保真度为0.95，一个三分之一的栅极在217 ns中为0.905，而在200 ns中为0.66的四个Qubit Gate。此外，我们开发了一个大门的模型，该模型显示四个Qubit Gate受共享谐振器损耗和Qubit-resonator耦合的传播的限制，必须对其进行解决以达到高保真操作。
Exploring highly connected networks of qubits is invaluable for implementing various quantum algorithms and simulations as it allows for entangling qubits with reduced circuit depth. Here, we demonstrate a multi-qubit STAR (Sideband Tone Assisted Rabi driven) gate. Our scheme is inspired by the ion qubit Mølmer-Sørensen gate and is mediated by a shared photonic mode and Rabi-driven superconducting qubits, which relaxes restrictions on qubit frequencies during fabrication and supports scalability. We achieve a two-qubit gate with maximum state fidelity of 0.95 in 310 ns, a three-qubit gate with state fidelity 0.905 in 217 ns, and a four-qubit gate with state fidelity 0.66 in 200 ns. Furthermore, we develop a model of the gate that show the four-qubit gate is limited by shared resonator losses and the spread of qubit-resonator couplings, which must be addressed to reach high-fidelity operations.
