报告题目：Active nanophotonics: from coherent control of quantum emitters to plasmonic nanolasers

报告人：Chih-Kang Shih, Department of Physics, The University of Texas, Austin, TX 78712 USA

报告时间：2017年12月11日上午10:00

报告地点：物理学院新楼5楼报告厅

报告人简介：Chih-Kang (Ken) Shih received his PhD in Applied Physics from Stanford University in 1988. He joined the faculty of the University of Texas at Austin in 1990 as an assistant professor in the Department of Physics, and was later appointed Assistant Professor of Physics. In 2001, he was promoted to the full Professor rank. Since 2004 he has held the Jane and Roland Blumberg Professorship in Physics. Shih is a Fellow of the APS, and he received the 2011 Distinguished Alumni Award from the National Tsing-Hwa University. He has specialized in mesoscopic physics, solid state physics, scanning tunnelling microscopy and spectroscopy, nanoscale optical imaging and spectroscopy, and thin film growth.

报告摘要： Light-matter interaction at nanometer scale is emerging as one of the most exciting fields in nanoscience. In combination with the advanced materials synthesis technique to tailor novel low-dimensional electronic systems, new doors are open toward design and realization of nanophotonic devices with novel functionalities. Here I will present two areas that have been pursued in my research group. The first concerns optical coherent control of semiconductor quantum dots as quantum light sources for quantum information applications1-5. In particular, I will discuss resonant excitation of quantum emitters in a cavity which enables observation of key signatures of resonant fluorescence such as Mollow triplets and Rabi oscillations in second order photon correlations. The second topic deals with recent exciting development in metal based plasmonic platform which enables the realization of plasmonic nanolasers that break the diffraction limit6-9. I will discuss the first continuous-wave operation of plasmonic nanolaser with ultra-low thresholds and show that the underlying mechanism is spasing. Future perspectives of an all plasmonic photonic circuits will also be discussed.

References:

1. Phys. Rev. Lett. 88, 087401 (2002).

2. Phys. Rev. Lett. 95, 187404,(2005).

3. Phys. Rev. Lett. 99, 187402, (2007).

4. Nat. Phys. 5, 203, (2009).

5. Phys. Rev. Lett. 109, 267402, (2012).

6. Science 337, 450-453, (2012).

7. Nano Lett. 14, 4381-4388, (2014).

8. Reports on Progress in Physcis 79, 086501 (2016).

9. Acs Photonics 4, 1431 (2017).

邀请人：张晨栋教授