UCL Quantum Science and Technology Institute


Seminar: Quantum networks with single optically addressable solid state quantum bits

7 June 2021

Professor Andrei Faraon of Caltech speaks about optical quantum networks based on rare-earth ions and nano-photonics.

Abstract illustration

HOSTProf. John Morton

SPEAKER: Andrei Faraon | Professsor of Aplied Physics and Electrical Engineering | Califronia Institute of Technology

TIME & VENUE: Thursday | 17th June, 2021 | 1:30 PM | ZOOM

TITLE: Quantum networks with single optically addressable solid state quantum bit

ABSTRACTQuantum optical networks will enable distribution of quantum entanglement at long distances, with applications including interconnects between future quantum computers and secure quantum communications. In this talk I will give an overview of the state of the art in solid state quantum networks based on single optically addressable spins, followed by a more in-depth discussion of implementations based on single rare-earth ions. I will focus on ytterbium 171 in yttrium orthovanadate which exhibits long spin coherence times and stable optical transitions. The advantages and disadvantages compared to other systems will be discussed.


Dr Andrei Faraon is a Professor of Applied Physics and Electrical Engineering at California Institute of Technology and is current visiting UCLQ. After earning a B.S. degree in physics with honours in 2004 at California Institute of Technology, he received his M.S. in Electrical Engineering and PhD in Applied Physics both from Stanford University in 2009. From 2009 to 2012 he was a postdoctoral fellow at Hewlett Packard Laboratories. During his PhD he was involved in seminal quantum optics experiments using single semiconductor quantum dots coupled to photonic crystal resonators. At HP, he pioneered quantum nano-photonic devices in single crystal diamond coupled to colour centres.

Dr Faraon left HP in 2012 for a faculty position at Caltech where he works on nano-photonic technologies for both classical and quantum applications including: optically addressable quantum bits, optical quantum memories, microwave to optical quantum transduction, metasurfaces and metamaterials for multi-functional imaging applications.

Dr Faraon is the recipient of the 2018 Adolph Lomb Medal of the Optical Society of America that recognizes a noteworthy contribution to optics made by a researcher who is still early in his or her career. He was also awarded the 2015 National Science Foundation CAREER award, the 2015 Air Force Office of Scientific Research young investigator award and the 2016 Office of Naval Research Young Investigator Award.