Alicea, Jason and Oreg, Yuval and Refael, Gil and von Oppen, Felix and Fisher, Matthew P. A. (2011) Non-Abelian statistics and topological quantum information processing in 1D wire networks. Nature Physics, 7 (5). pp. 412-417. ISSN 1745-2473. http://resolver.caltech.edu/CaltechAUTHORS:20110524-084153167
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The synthesis of a quantum computer remains an ongoing challenge in modern physics. Whereas decoherence stymies most approaches, topological quantum computation schemes evade decoherence at the hardware level by storing quantum information non-locally. Here we establish that a key operation—braiding of non-Abelian anyons—can be implemented using one-dimensional semiconducting wires. Such wires can be driven into a topological phase supporting long-sought particles known as Majorana fermions that can encode topological qubits. We show that in wire networks, Majorana fermions can be meaningfully braided by simply adjusting gate voltages, and that they exhibit non-Abelian statistics like vortices in a p+ip superconductor. We propose experimental set-ups that enable probing of the Majorana fusion rules and the efficient exchange of arbitrary numbers of Majorana fermions. This work should open a new direction in topological quantum computation that benefits from physical transparency and experimental feasibility.
|Additional Information:||© 2011 Nature Publishing Group. Received 29 June 2010; accepted 22 December 2010; published online 13 February 2011. We have benefited greatly from stimulating conversations with P. Bonderson, S. Das Sarma, L. Fidkowski, E. Henriksen, A. Kitaev, P. Lee, X. Qi and A. Stern. We also gratefully acknowledge support from the Lee A. DuBridge Foundation, ISF, BSF, DIP and SPP 1285 grants, Packard and Sloan fellowships, the Institute for Quantum Information under NSF grants PHY-0456720 and PHY-0803371, and the National Science Foundation through grant DMR-0529399. Author contributions: All authors contributed to the inception of the ideas in the manuscript, design of networks and proposed experimental setups, and proof of non-Abelian statistics.|
|Group:||Institute for Quantum Information and Matter, IQIM|
|Subject Keywords:||Quantum physics; Information theory and computation; Electronics, photonics and device physics|
|Official Citation:||Alicea, J., Y. Oreg, et al. (2011). "Non-Abelian statistics and topological quantum information processing in 1D wire networks." Nat Phys 7(5): 412-417.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||24 May 2011 17:26|
|Last Modified:||26 Dec 2012 13:15|
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