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

Students Wanted
actively recruiting



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)


Citizenship
Canadian, German

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).