【报告题目】Adiabatic speedup and almost exact quantum state transfer by pulse control in quantum open system
【报 告 人】中国海洋大学物理与光电工程学院，王兆明 教授
【报告时间】9月22日 （周四）10:00
【腾讯会议ID】445-999-984
【报告摘要】Adiabatic quantum computation requires keeping a system in a particular eigenstate. However, unwanted transitions can occur due to the interaction of the system with a noisy environment. The adiabatic evolution of the system will then be ruined. Here we present an effective control scheme to allow for a speedup of the adiabatic process by using a sequence of pulses on the system. By carefully choosing the pulse intensity and duration, an accelerated adiabatic path can be obtained for both a weak-coupling and a strong non-Markovian environment. In the second part, we report the feasibility of using an effective pulse control methods to realize an almost exact state transmission through a uniform chain where the communication channel is immersed in a quantum environment. The results show that the memory effects of the environment can support an effective transmission control that can be boosted under a non-Markovian environment.
【报告人简介】王兆明，中国海洋大学教授，博导。现任物理与光电工程学院副院长。北京理工大学与美国南伊利诺伊大学联合培养博士，美国斯蒂文斯理工学院、新加坡国立大学、西班牙巴斯克大学访问学者。npj Quantum Information、PRL、PRA、SR、JPB、PLA、EPJD等学术期刊审稿人。长期从事固态量子信息的基础理论研究，特别是基于自旋系统的量子通信、绝热量子计算、以及开放系统的动力学演化等方向的研究。首次研究了自旋系统中的双向量子通信，并发现了一类可以实现高质量通信的编码态。与合作者首次提出了零面积脉冲控制并用来实现了有效的绝热过程的加速。在Phys. Rev. Lett.等学术期刊发表SCI论文50余篇。研究成果获山东省高等学校优秀科研成果奖。承担国家自然科学基金，山东省自然科学基金等科研项目多项。
【邀请人】王晨 副教授
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