ITR: Fast Superconducting Qubit and Qugate for Quantum Computing

EIA-0082499 Siyuan，HanUniversity of Kansas题目：ITR：Fast Superconducting Qubit and Qugate for Quantum Computing来自堪萨斯大学和日本邮电部的实验学家和理论家组成的跨学科团队正在合作探索将超导干涉设备用于量子计算。 正在研究的SQUID器件由嵌入超导回路中的约瑟夫森结组成，将用于实现量子比特和量子门。 本文主要研究两个问题：1.利用氮化铌（NbN）作为超导材料，提高量子比特的退相干时间。 NbN比常用的铌SQUID具有低得多的固有阻尼。 日本合作者拥有世界上最好的NbN结制造设施，他们将制作隧道结和SQUID的样品。 这些将被送到堪萨斯测量退相干时间。利用SQUID对受控非门进行综合的理论和实验研究。

EIA-0082499Siyuan, HanUniversity of KansasTitle: ITR: Fast Superconducting Qubit and Qugate for Quantum ComputingAn interdisciplinary team of experimentalists and theoreticians from the University of Kansas and the Japanese Ministry of Posts and Telecommunications are collaborating to explore the use of superconducting interference devices for quantum computing. The SQUID devices under investigation consist of Josephson junctions embedded in a superconducting loop, and will be used to implement quantum bits and quantum gates. This work concentrates on two problems:1. To increase the decoherence time of qubits using niobium nitride (NbN) as the superconducting material. NbN has much lower intrinsic damming than the commonly used niobium SQUID. The Japanese collaborators, who have the best NbN junction fabrication facilities in the world, will make samples of tunnel junctions and SQUIDs. These will be sent to Kansas for measurement of decoherence times.2. To conduct an integrated theoretical and experimental study of Controlled-Not gates using SQUID.