CaltechAUTHORS
  A Caltech Library Service

Composite anyon coding and the initialization of a topological quantum computer

König, Robert (2010) Composite anyon coding and the initialization of a topological quantum computer. Physical Review A, 81 (5). Art. No. 052309. ISSN 1050-2947. http://resolver.caltech.edu/CaltechAUTHORS:20100616-111635116

[img]
Preview
PDF - Published Version
See Usage Policy.

342Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20100616-111635116

Abstract

Schemes for topological quantum computation are usually based on the assumption that the system is initially prepared in a specific state. In practice, this state preparation is expected to be challenging as it involves nontopological operations which heavily depend on the experimental realization and are not naturally robust against noise. Here we show that this assumption can be relaxed by using composite anyons: starting from an unknown state with reasonable physical properties, it is possible to efficiently distill suitable initial states for computation purely by braiding, i.e., reversible gates. This is achieved by encoding logical information in a subsystem code with gauge system corresponding to the internal degrees of freedom of composite objects.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevA.81.052309 DOIUNSPECIFIED
http://pra.aps.org/abstract/PRA/v81/i5/e052309PublisherUNSPECIFIED
Additional Information:© 2010 The American Physical Society. Received 27 January 2010; published 10 May 2010. The author thanks John Preskill and Ben Reichardt for comments on an earlier draft. He also thanks the Erwin Schr¨odinger Institute and the Kavli Institute for Theoretical Physics for their hospitality. Support by NSF grants PHY- 0803371 and PHY05-51164 and SNF grant PA00P2-126220 is gratefully acknowledged.
Funders:
Funding AgencyGrant Number
NSFPHY-0803371
NSFPHY05-51164
Stanford Nanofabrication Facility (SNF)PA00P2-126220
Classification Code:PACS: 03.67.Lx, 03.67.Pp.
Record Number:CaltechAUTHORS:20100616-111635116
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20100616-111635116
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18703
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:09 Jul 2010 20:44
Last Modified:26 Dec 2012 12:09

Repository Staff Only: item control page