Wavefunctions for topological quantum registers
- Microsoft station Q, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106 (United States) and Center for the Physics of Information, California Institute of Technology, Pasadena, CA 91125 (United States)
- Institute for Theoretical Physics, Valckenierstraat 65, 1018 XE Amsterdam (Netherlands)
We present explicit wavefunctions for quasi-hole excitations over a variety of non-abelian quantum Hall states: the Read-Rezayi states with k {>=} 3 clustering properties and a paired spin-singlet quantum Hall state. Quasi-holes over these states constitute a topological quantum register, which can be addressed by braiding quasi-holes. We obtain the braid properties by direct inspection of the quasi-hole wavefunctions. We establish that the braid properties for the paired spin-singlet state are those of 'Fibonacci anyons', and thus suitable for universal quantum computation. Our derivations in this paper rely on explicit computations in the parafermionic conformal field theories that underly these particular quantum Hall states.
- OSTI ID:
- 20845990
- Journal Information:
- Annals of Physics (New York), Vol. 322, Issue 1; Other Information: DOI: 10.1016/j.aop.2006.07.015; PII: S0003-4916(06)00184-9; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
- Country of Publication:
- United States
- Language:
- English
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