Photonic entanglement for quantum computation and quantum simulation

Date

Dec 14, 2011

Time

4:30 PM - 6:00 PM

Speaker

Philip Walther

Affiliation

Universität Wien

Language

en

Main Topic

Physik

Other Topics

Physik, Elektro- u. Informationstechnik

Host

Seminar Quantum Dynamics

Description

Single photons are ideal carriers of quantum information due to their low-noise properties and ease of manipulation at the single-qubit level. Therefore, the applications are manifold and reach from quantum communication and quantum metrology to optical quantum computing and lately quantum simulations. Quantum simulators, as suggested originally by Richard Feynman, are controllable quantum systems that can be used to mimic other quantum systems, thus being able to tackle problems that are intractable on classical computers. The usage of entangled photon states for the simulation of other quantum systems is an entirely new research direction and has just become possible by the latest theoretical and experimental developments. Since quantum simulations are conjectured to be less demanding than quantum computations implies that this might be the most feasible application for small- and medium-scale quantum systems, such as in quantum chemistry. The development and combination of new quantum technologies for the generation and manipulation of multi-photon entanglement will enable (a) quantum simulations that provide insight into other quantum systems , but also (b) quantum computation experiments in quantum networks, and (c) quantum control of multi-qubit entanglement to study new and complex quantum states.

Last modified: Dec 14, 2011, 8:35:28 AM