时间：2016年10月14号（周五）13：30

地点：下沙校区D楼204会议厅

报告摘要：

In this talk, I will review our recent activities with our collaborators on designing and fabricating various superconducting circuits for scalable quantum information processing. In particular, I will introduce a circuit QED processor which integrates four individually-accessible Xmon qubits that are arranged in a chain. Neighboring qubit couplings can be flexibly turned on and off by tuning the qubits’ resonance frequencies. With this processor we demonstrate a simplest instance of a quantum algorithm that promises to solve linear systems in a time scale of order log(N), where N is the number of variables. The experimental sequence is one-microsecond long, which consists of 9 single-qubit gates and 9 two-qubit entangling gates in total. For eighteen input vectors, execution of the sequence in our four-qubit circuit yields solutions for the linear equations with reasonably high fidelities ranging from 0.84 to 0.92.

Work in collaboration with Xiaobo Zhu at IOP and Chaoyang Lu at USTC.

专家简介：

   王浩华，浙江大学教授，长期从事超导量子计算和模拟实验研究，精通多层次超导芯片的微加工和微波控制技术。2006年获得美国宾州州立大学物理学博士学位，2007-2010年在美国加州大学圣塔芭芭拉分校从事博士后研究，2010年底加盟浙江大学组建了先进超导量子计算实验室，建成两套国际先进的超导比特测试系统。共发表论文近50篇，大多在《自然》及其子刊、《科学》和《物理评论快报》，总他引近3000次。报告人回国后获得基金委优青和中组部青年拔尖人才资助，基于自己的实验平台与国际国内同行合作已发表论文《自然•通讯》3篇和《物理评论快报》3篇。