test(以下为旧站栏目)

Ground-state Stabilization of Quantum Systems by Dissipation

潘宇

2015-04-24

 报 告 人:潘宇

 
报告时间:20150424日(星期五)下午03:00
 
报告地点:华南理工大学自动化科学与工程学院6楼会议室
 
**********************************************************
Abstract
Control by dissipation, or environment engineering, constitutes an important methodology within quantum coherent control which was proposed to improve the robustness and scalability of quantum control systems. The system-environment coupling, often considered to be detrimental to quantum coherence, also provides the means to steer the system to desired states. This paper aims to develop the theory for engineering of the dissipation, based on a ground-state Lyapunov stability analysis of open quantum systems via a Heisenberg-picture approach. In particular, Lyapunov stability conditions expressed as operator inequalities allow a purely algebraic treatment of the environment engineering problem, which facilitates the integration of quantum components into a large-scale quantum system and draws an explicit connection to the classical theory of vector Lyapunov functions and decomposition-aggregation methods for control of complex systems. This leads to tractable algebraic conditions concerning the ground-state stability and scalability of quantum systems. The implications of the results in relation to dissipative quantum computing and state engineering are also discussed in this paper.

Biography

潘宇,澳大利亚国立大学、澳大利亚卓越中心研究员。潘宇博士2007年在四川大学获学士学位,2012中国科学院数学与系统科学研究院获博士学位。 2012年至今在澳大利亚国立大学任Research Fellow。潘宇博士的研究兴趣包括量子工程与控制理论,量子全光学电路以及量子信息处理等。