Error-correcting one-way quantum computation with global entangling gates

Jaewoo Joo*, David L. Feder

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

We present an approach to one-way quantum computation (1WQC) that can compensate for single-qubit errors by encoding the logical information residing on physical qubits into five-qubit error-correcting code states. A logical two-qubit cluster state that is the fundamental resource for encoded quantum teleportation is then described by a graph state containing ten vertices with constant degree seven. Universal 1WQC that incorporates error correction requires only multiple copies of this logical two-qubit state and a logical four-qubit linear cluster state, which are prepared only just in advance of their use in order to minimize the accumulation of errors. We suggest how to implement this approach in systems characterized by qubits in regular two-dimensional lattices for which entangling gates are generically global operations, such as atoms in optical lattices, quantum dots, or superconducting qubits.

Original languageEnglish
Article number032312
Number of pages11
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume80
Issue number3
DOIs
Publication statusPublished - 11 Sep 2009

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