主讲人单位 (Speaker's Institute): 中南林业科技大学

邀请人 (Invited by): 李朝红

时间 (Time): 星期一，2022/09/05-10：30-12：00

地点 (Location): 珠海校区天琴中心2317会议室

摘要 (Abstract): 

Quantum state transfer (QST) is the basic task of quantum information processing.However, due to the inevitable decoherence of quantum state and device imperfections, the degree a quantum state can be transferred with good fidelity will be limited, which induces a trade-off between the transfer speed, distance, and robustness, as increasing one results in a decrease of the others and vice versa. In this work, we propose a fast, robust, and long-distance QST protocol via a splicing Su-Schrieffer-Heeger (SSH) chain. It is found that the existence of zero-energy interface state (IFS) not only can improve the speed of QST but also can realize long-distance QST. The QST protocol assisted by zero-energy IFS is quite robust to disorder and environment, and also outperforms the single-SSH-chain protocol.

主讲人简介 (Speaker's CV): 

钟宏华，教授、博士生导师，2011年6月毕业于湖南师范大学理论物理专业，获理学博士学位，2012年4月至2017年8月分别在中山大学物理学、光学工程博士后流动站从事博士后研究。主要研究量子物理及其应用，已发表SCI论文50余篇，其中Phys. Rev. A/B/R 16 篇，论文引用1000余次，引用超过100次的论文3篇。1篇论文被录入英国物理学会出版社精选论文，1篇论文获评2014年英国物理学会出版社高质量论文奖。主持完成国家级、省部级项目10余项。