raussen

Research

Affiliation

University of British Columbia

Position

Faculty

Research Summary

My research interest is in quantum computation, in particular computational models. One object of study in this field is the one-way quantum computer, a scheme of quantum computation consisting of local measurements on an entangled universal resource state. The questions I ask are ``What are the elementary building blocks of the one-way quantum computer? What is their composition principle?'' I hope that the answer to these questions will give clues for how to construct novel quantum algorithms. Another model of quantum computation that I study are quantum cellular automata (QCA). I am, for example, interested in the question of whether and what type of quantum algorithms can be encoded the shape of the boundary of a finitely extended quantum cellular automaton.

I have invented the one-way quantum computer (QCc) together with Hans Briegel (UK patent GB 2382892, US patent 7,277,872). The QCc is a scheme of universal quantum computation by local measurements on a multi-particle entangled quantum state, the so-called cluster state. Quantum information is written into the cluster state, processed and read out by one-qubit measurements only. As the computation proceeds, the entanglement in the resource cluster state is progressively destroyed. Measurements replace unitary evolution as the elementary process driving a quantum computation.

Research Website

http://www.physics.ubc.ca/~raussen/

Research Group Website

http://www.physics.ubc.ca/~raussen/group.html

Personal

Title

Dr.

Full Name

Robert Raussendorf

History

Member for

2 years 10 weeks