报告题目： Introduction to quantum simulators and quantum annealers
报 告 人：Prof. Maciej Lewenstein （Quantum Optics Theory Group, ICFO-The Institute of Photonic Sciences, Spain）
报告时间：2016年8月23日（周二）上午10：00
报告地点：校本部G309
邀 请 人：张永平教授
报告摘要：In the first part of my lecture I will argue that while universal quantum computers remain a still open challenge of technology, special purpose quantum computers, a.k.a quantum simulators already exist in laboratories. These systems allow us to understand and perhaps, in the future, control important phenomena that have even more important application like high temperature superconductivity, or superfluidity. Particularly interesting are also quantum annealers, i.e. quantum simulators of classical complex (NP-hard) problems, like travelling salesman or spin glass.
In the second part of the lecture I will talk more concretely about quantum simulators based on ultracold atoms in optical lattices. I will focus on the paradigm many body model: Bose-Hubbard models and discuss its properties and peculiarities.
In the third part I will discuss the challenging problem of the Fermi-Hubbard model and its relation to the mysteries of high temperature superconductivity. I will review the current state of experiments, and quest for anti-ferromagnetic order. Apart from elementary didactical material I will shortly describe examples of recent works by my group on Hubbard models.
