Quantum computing in the presence of spontaneous emission by a combined dynamical decoupling and quantum-error-correction strategy

K. Khodjasteh and D. A. Lidar
Phys. Rev. A 68, 022322 – Published 28 August 2003; Erratum Phys. Rev. A 72, 029905 (2005)
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Abstract

A method for quantum computation in the presence of spontaneous emission is proposed. The method combines strong and fast (dynamical decoupling) pulses and a quantum error correcting code that encodes n logical qubits into only n+1 physical qubits. Universal, fault-tolerant, quantum computation is shown to be possible in this scheme using Hamiltonians relevant to a range of promising proposals for the physical implementation of quantum computers.

  • Received 20 January 2003

DOI:https://doi.org/10.1103/PhysRevA.68.022322

©2003 American Physical Society

Erratum

Authors & Affiliations

K. Khodjasteh

  • Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario, Canada M5S 1A7

D. A. Lidar

  • Chemical Physics Theory Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6

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Vol. 68, Iss. 2 — August 2003

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