Universität Wien

The group “Quantum Optics, Quantum Nanophysics and Quantum Information” at the Faculty of Physics at the University of Vienna (www.univie.ac.at) is internationally highly competitive in various quantum research areas covering experimental and theoretical research in foundations of quantum physics, quantum optics, quantum information, strongly correlated quantum systems as well as molecular quantum nanophysics. The experimental groups run more than a dozen state-of-the-art laboratories on topics related to the foundations of quantum physics, quantum physics with photons, molecules, clusters, nanoparticles and nano-mechanical systems, as well as quantum information processing in computation, simulation, and communication, and optical precision measurements. The theoretical groups focus their research on the foundations of quantum physics, many-body quantum correlations, quantum statistics and field theory, as well as quantum computation and quantum communication.

  • Role in the Project:

Universität Wien will be involved in WP2 “Nonlinear graphene plasmonics: toward the quantum limit”, with the goals of developing single-photon superconducting nanowire detectors and performing quantum correlation measurements of graphene plasmons.

P.I. - Prof. Dr. Philip Walther

Research Group: Quantum Information Science and Quantum computation
Group homepage: walther.quantum.at
 The research of Philip Walther is dedicated to photonic quantum information science. During his PhD he has demonstrated the first one-way quantum computer using cluster states, which became one of the most highly cited quantum computation papers. During his research as postdoc at Harvard University he got also expertise in atom based quantum optics.
In 2008 Philip Walther moved to Vienna and established an independent research group that has achieved important milestones in optical quantum computing, including the first photonic quantum simulation of solid-state physics, the first privacy-preserving delegated quantum computation, the first verification of quantum computation and the first intermediate quantum computation using passive optical networks.
The research group of Philip Walther, has a long-standing experience in the single-photon generation using parametric down-conversion, the precise manipulation of entangled multi-photon systems, and in the characterization of complex entangled states.
Research Team description
The research of the Quantum Information Science and Quantum Computation Group of Philip Walther at the Faculty of Physics at the University of Vienna concerns the development and usage of advanced photonic quantum systems to investigate quantum effects and their implications for fundamental concepts and applications in quantum information processing. The group aims to exploit multi-photon quantum systems for the exploration of quantum computers and quantum clouds in quantum networks, as well as quantum simulators capable of providing insight into other quantum systems. We aim to perform experiments in unprecedented parameter regimes by continual improvements in our ability to obtain precise quantum control of complex multi-particle quantum systems. Within the research project GRASP the group aims to experimentally pursue graphene-based single-photon nonlinear optics.


Grasp Latest News

Annual meeting of all partners...

Annual meeting of all partners, September 25-26, 2016, University of Vienna.

Interview with Philip Walther ...

[Walther Group] Philip Walthers new interview on quantum computers was aired on W24 It is likely that we are on the cusp of a new age in computing called quantum computing. In this compilation video, experts discuss where we are in the quantum computing journey and what they expect to come in the near future. [Video] Inside Quantum Minds Interview with Philip Walther on quantum computers

Nonlinear excitation of graphe...

The nonlinear response of graphene enables excitation and detection of plasmons using far-field optics Surface plasmons in graphene offer a compelling platform for photonic technologies, exhibiting intriguing properties such as electro-optical tunability, a very small wavelength, and high electromagnetic field concentration. Graphene plasmons also exhibit a large bandwidth, extending into the far [ ... ]

Annual meeting of all partners...

Annual meeting of all partners, September 7, 2015, University of Exeter. Simultaneously held with GRASP-funded “Workshop on Graphene Optics,” September 8-9.