M S Tame et al 2007 New J. Phys. 9 201 doi:10.1088/1367-2630/9/6/201
One-way quantum computing in a decoherence-free subspace
Focus on Measurement-Based Quantum Information ProcessingM S Tame, M Paternostro and M S Kim
Show affiliationsPart of Focus on Measurement-Based Quantum Information Processing
We introduce a novel scheme for one-way quantum computing (QC) based on the use of information encoded qubits in an effective cluster state resource. With the correct encoding structure, we show that it is possible to protect the entangled resource from phase damping decoherence, where the effective cluster state can be described as residing in a decoherence-free subspace (DFS) of its supporting quantum system. One-way QC then requires either single or two-qubit adaptive measurements. As an example where this proposal can be realized, we describe an optical lattice set-up where the scheme provides robust quantum information processing. We also outline how one can adapt the model to provide protection from other types of decoherence.
- PACS
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03.67.Lx Quantum computation architectures and implementations
03.65.Yz Decoherence; open systems; quantum statistical methods
03.67.Mn Entanglement measures, witnesses, and other characterizations
- Subjects
- Dates
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Issue 6 (June 2007)
Received 28 February 2007
Published 29 June 2007
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One-way quantum computing in a decoherence-free subspace
M S Tame et al 2007 New J. Phys. 9 201
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