报告介绍 量子光机械系统作为一个全新的研究领域, 在最近几年获得了令人瞩目的发展。我们提出应用激光光镊束缚和冷却玻璃球,把玻璃球质心运动冷却到量子基态, 制作一个达到量子极限的微小探测器。我们已经成功用光镊在空气和真空里束缚玻璃球, 并研究了小球在空气里的布朗运动。我们观测到了在很短的时间尺度下, 布朗运动不符合爱因斯坦的理论。我们还首次成功测量了布朗运动的瞬时速度。这种超灵敏光镊技术还有很多其它的应用,比如用来探测单...

报告介绍 Abstract: The force exerted by photons is of fundamental importance in light- matter interactions. For example, in free space, optical tweezers have been widely used to manipulate atoms and microscale dielectric particles. This optical force is expected to be greatly enhanced in a nanophotonic waveguides in which light is highly concentrated with orders of magnitude larger intensity. Recently, we re...

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报告介绍 摘要：Recently, a new class of topological states has been proposed and experimentally realized. These topological insulators have an insulating gap in the bulk, but have topologically protected edge or surface states due to the time reversal symmetry. In two dimensions the edge states give rise to the quantum spin Hall (QSH) effect, in the absence of any external magnetic field. I shall review the ...

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报告介绍 完整报告题目:  Quantum manipulation of topological qubits by quantum tunneling effect – new way towards fault-torrent quantum computation报告摘要： The degenerate ground states of topological order (the so-called topological qubits) are used as the protected code subspace to build a quantum computer by tuning their quantum tunneling effect. We study quantum tunneling effects of the topolo...

报告介绍 摘要：Topological order is a new type of quantum state beyond Laudau paradigm. Recently, many different systems with topologically ordered ground states on spin model (we call them symmetry protected topological orders) were found. How to classify symmetry protected topological orders and how to describe the quantum phase transitions between them (topological quantum phase transitions)? What's topol...

报告介绍 Abstract：The cluster-based nanostructures with quantum properties become one of hot topics in current nanoscience and nanotechnology. Following are a few examples related to the research work in our group.1) Quantization of surface phonon modes of Si clusters; 2) Long lifetime photolumicescence of silicon cluster-assembled nanowires; 3) Conductance resonance in gold cluster-assembled nanostructures...

报告介绍 完整报告题目：Applications of nonlinear optics in nanometer-scale far-field microscopy and oilsands surface chemistry

报告介绍

报告介绍 绿色化学化工是未来化学的必经之路， 绿色替代溶剂是其中一个重要的研究内容，本报告将就近年来绿色溶剂的研究热点之一：“室温离子液体在绿色化学中的应用及工业化”进行重点介绍，报告人在该领域具有丰富的研究经验与大量工业化研究成果。

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