Gates for the kane quantum computer in the presence of dephasing

Hill, C. D. and Goan, H. S. (2004) Gates for the kane quantum computer in the presence of dephasing. Physical Review A, 70 2: 022310-1-022310-9. doi:10.1103/PhysRevA.70.022310

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Author Hill, C. D.
Goan, H. S.
Title Gates for the kane quantum computer in the presence of dephasing
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2004-01-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.70.022310
Open Access Status File (Publisher version)
Volume 70
Issue 2
Start page 022310-1
End page 022310-9
Total pages 9
Editor B. Crasemann
Place of publication United States
Publisher The American Physical Society
Language eng
Subject C1
240203 Condensed Matter Physics - Electronic and Magnetic Properties; Superconductivity
780102 Physical sciences
Abstract In this paper we investigate the effect of dephasing on proposed quantum gates for the solid-state Kane quantum computing architecture. Using a simple model of the decoherence, we find that the typical error in a controlled-NOT gate is 8.3x10(-5). We also compute the fidelities of Z, X, swap, and controlled Z operations under a variety of dephasing rates. We show that these numerical results are comparable with the error threshold required for fault tolerant quantum computation.
Keyword Physics, Atomic, Molecular & Chemical
Spin Resonance Experiments
Phosphorus-doped Silicon
Error-correcting Codes
Lattice Relaxation
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 14:18:54 EST