Title : Investigating quantum properties of nanoscale devices

Speaker: Professor Charles Smith, Cavendish Laboratory, 

                  Physics Department, Cambridge University

时间： 9月20号，星期五，上午 10:00

地点： 信电系， 玉泉校区微电子楼， 303室

Abstract:

There is a growing interest in investigating if quantum mechanics can be used for computing applications. It is predicted that a quantum computer could be very efficient at solving a certain class of problems.  To make this a reality we need to fully understand how to manipulate quantum devices at high speed and with very high precision. In this talk I will outline some of the work going on in Cambridge in this area, focussing on single electron movement in quantum dots at GHz frequencies. This will include dots fabricated from graphene, carbon nanotube and IIIV materials. I will show how low temperature scanning probes can be used to analyse the spatial variations of important physical properties on the nanoscale.

Biography:

Charles G. Smith completed his PhD at the Cavendish Laboratory, Cambridge University in 1987, then worked as a research fellow, lecturer, and reader, and became a full professor in the same institute in 2005. He has worked on nano-electrical, nano-mechanical devices and lab-on-a-chip since 1985. He pioneered electrical transport work on GaAs quantum dots and techniques for measuring single electron charge movement in those dots, initially at low frequencies and recently at high frequencies for quantum computing applications. Recently he has been working on carbon based devices, especially using graphene. He is the founder of two spin out companies Cavendish-Kinetics Ltd and Cambridge Lab on Chip Ltd, and he has helped raised over $20 million in venture capital to develop new technologies for commercialization.