First Name
Robert
Last Name
Raussendorf
Position
Associate Professor
Office Room
Hennings 338
Tel (Office)
(604) 822-3253
Email
raussen@phas.ubc.ca
Research Groups

Students Wanted
willing to supervise



Master's Degree
University of Heidelberg, Germany, 1997, Masters in Physics

Doctoral Degree
Ludwig Maximilians University Munich, Germany, 2003, PhD in Physics

Employment History

2003 - 06: Caltech (postdoc),

2006 - 07: Perimeter Institute (postdoc),

Since 2008: UBC (faculty) 


Awards

Sloan Research Fellow (2009 - 11)


Research Area
Theoretical Physics

Research Field
Quantum computation, quantum error correction

Research Topics
measurement-based models for quantum computation, fault-tolerant quantum computation under geometric constraints, quantum cellular automata,

Research Title
Research

Abstract

My research is quantum information, particularly computation. I have invented, with Hans Briegel, the so-called one-way quantum computer. It is a scheme of quantum computation driven by local projective measurements on an entangled resource state, the so-called cluster state. Entanglement in the resource is consumed as the computation proceeds. 

Subsequently, with my co-workers J. Harrington (LANL) and K. Goyal (Caltech) I have described a scheme of fault-tolerant quantum computation for qubits arranged in a 2D lattice which only requires nearest-neighbor translation-invariant Ising interaction + local operation (2007). This scheme yields the highest known fault-tolerance threshold for a 2D architecture.

I am currently very interested in the relation of quantum computation to symmetry-protected topological order, and to Bell-nonlocality and contextuality.


Selected Publications
  • J Bermejo-Vega, N Delfosse, DE Browne, C Okay, R Raussendorf, Contextuality as a resource for qubit quantum computation, Phys. Rev. Lett. 119, 120505 (2017). 

  • Stephen, DT; Wang, DS; Prakash, A; Wei, TC; Raussendorf, RComputational Power of Symmetry- Protected Topological Phases, Phys. Rev. Lett 119, 010504 (2017). 

  • R. Raussendorf and H.-J. Briegel, Computational model underlying the one-way quantum computer,  Quant. Inf. Comp. 6, 443 (2002).

  • R. Raussendorf and H.-J. Briegel, A one-way quantum computer, (preprint version is entitled ``Quantum computing via measurements only'', Phys. Rev. Lett. 86, 5188 (2001).

  • R. Raussendorf and J. Harrington, Fault-tolerant quantum computation with high threshold in two dimensions, Phys. Rev. Lett. 98, 190504 (2007).