Comprehensive Encoding and Decoupling Solution to Problems of Decoherence and Design in Solid-State Quantum Computing

Mark S. Byrd and Daniel A. Lidar
Phys. Rev. Lett. 89, 047901 – Published 3 July 2002
PDFExport Citation

Abstract

Proposals for scalable quantum computing devices suffer not only from decoherence due to the interaction with their environment, but also from severe engineering constraints. Here we introduce a practical solution to these major concerns, addressing solid-state proposals in particular. Decoherence is first reduced by encoding a logical qubit into two qubits, then completely eliminated by an efficient set of decoupling pulse sequences. The same encoding removes the need for single-qubit operations, which pose a difficult design constraint. We further show how the dominant decoherence processes can be identified empirically, in order to optimize the decoupling pulses.

  • Received 6 February 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.047901

©2002 American Physical Society

Authors & Affiliations

Mark S. Byrd and Daniel A. Lidar

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

References (Subscription Required)

Click to Expand
Issue

Vol. 89, Iss. 4 — 22 July 2002

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×