About | People | Research | Events | Join Us | Contact | 中文版 
 

报告题目   Protecting logical qubits with dynamical decouplingundefined 

报告人   张江 副研究员(北京量子信息科学研究院)

报告时间2024年5月24日(星期五)14:00-15:00

报告地点北洋园校区 49 教 410 室 (线上:腾讯会议 838-9499-4192)

报告摘要

       Reliable quantum computation relies on the utilization of logical qubits, making it imperative to demonstrate their superior performance over physical qubits. Dynamical decoupling emerges as an effective approach to protect logical qubits against environmental noise. Recent progress in this area includes using dynamical decoupling to generate decoherence-free subspaces (DFS) and subsystems (NS), where logical qubits can be stored. Here, we propose and experimentally demonstrate a scheme for protecting logical qubits by implementing iSWAP gates on nearest-neighbor superconducting transmons. Our experiments reveal that the decoherence time of a logical qubit is extended by up to 365% compared to the best-performing physical qubit. To the best of our knowledge, we demonstrate for the first time that multiple logical qubits outperform their physical counterparts in superconducting qubits. Given its measurement-free nature, our scheme holds promise as a component for future fault-tolerant quantum computation.

报告人简介

      张江 现任北京量子信息科学研究院副研究员,于2015年在山东大学物理系获得博士学位,2015至2019年先后在北京计算科学研究中心和清华大学物理系从事博士后工作。2019年10月加入鹏城国家实验室量子计算研究中心,获得深圳市后备人才计划。2020年11月起在北京量子信息科学研究院算法团队工作,主要研究方向为几何量子计算、量子噪声的抑制和量子纠错。目前已主持两项国家级基金,发表文章十余篇,包括Physics Review Letters一篇、长篇综述Physics Reports一篇




关闭窗口

天津大学理学院 量子交叉研究中心   地址:天津津南区 雅观路135号 天津大学北洋园校区32楼146 
Center for Joint Quantum Studies, School of Science, Tianjin University     Address : Yaguan Road 135, Jinnan District, 300350 Tianjin, P. R. China