Photonics
Quantum physics at the speed of light
We investigate novel methods for the generation and control of single particles of light (photons) as well as (entangled) states of multiple such particles. We utilize various technologies to this end, among them tailored nonlinear optical crystals, ultracompact waveguides as well as semiconductor quantum dots. We then use the so generated photons for further experiments, on the foundations of quantum mechanics, on multi-particle dynamics, on quantum communication as well as on quantum-enhanced distance measurements.
Our research insterests include:
- Foundations of quantum physics: Investigation of the interference of single and multiple photons with (partially) identical properties
- Integrated optical photon sources: Development of waveguide devices for the generation of entangled photon pairs and their application
- Semiconductor quantum dots: Research on novel excitation protocols for optimized single-photon generation and on collective dynamics
- Quantum communication: Quantum key distribution with single photons between a ground station and a satellite
Gregor Weihs
Professor of Photonics
PhD 2000, University of Vienna
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Affiliations
Institute of Experimental Physics, University of Innsbruck
Gregor Weihs’ research interests include fundamental physics both experimental and theoretical, quantum and semiconductor optics and quantum information. He currently focuses on novel sources of entangled photon pairs from nonlinear waveguides and from semiconductor quantum dots. He further investigates quantum communication and the foundations of physics. He serves also as Vice-Rector for Research at the University of Innsbruck and Director of Research of the Cluster of Excellence Quantum Science Austria.