Solid-state cavity QED
Find out more about subscribing to add all events.
Solid-state cavity QED
Fri, 19/09/2014 - 11:00 to 12:00
Location:
Speaker:
Prof. Dirk Bouwmeester
Affiliation:
Department of Physics, Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, USA & Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, the Netherlands
Synopsis:
To interface photons with solid-state devices, we experimentally investigate the coupling of optically active quantum dots and rare earth ions to optical micro cavities. We demonstrate charge tunable quantum dots inside a polarization degenerate micropillar cavity and show how polarization resolved reflection and transmission spectroscopy can probe the coherence properties of the neutral and singly negatively charged quantum dot transitions [1-3]. We present a theoretical scheme for using this system for quantum logic operations [4].
Results on an alternative solid-state cavity QED system will also be presented. This system consists of a SiN ring resonator embedded in SiO2 [5] with implanted rare-earth ions. Rare earth ions are well known for their excellent coherence properties and currently there is a lot of excitement about the prospects of using such ions for quantum information processing purposes. We will demonstrate a system with a Purcell factor of 10 and argue that a Purcell factor of 100 is well within reach what makes communication with a single rare-earth ion in the solid state system possible [6].
Biography:
Professor Dirk Bouwmeester is an experimental physicist specializing in quantum optics and quantum information. He currently holds faculty positions at the University of California at Santa Barbara in US and at Leiden University in the Netherlands. His current areas of research include solid-state cavity quantum electrodynamics, knotted states of light, micro-optomechanical systems and DNA-templated optical emitters. He was awarded the 2014 Spinoza prize, the highest scientific award in the Netherlands. Dirk Bouwmeester obtained his PhD in 1995 from the University of Leiden in the Netherlands. From 1997 to 1999 D. Bouwmeester was a postdoctoral researcher in the group of Prof. A. Zeilinger at the University of Innsbruck where he performed the first demonstration experiments of quantum teleportation and three-particle (GHZ) entanglement. From 1999 to 2001 he established a research group at the University of Oxford at the Centre for Quantum Computation directed by Prof. A. Ekert. There he performed first demonstrations of optimal quantum cloning of photon states and of stimulated emission of entangled photons.