One-way quantum computing in a decoherence-free subspace

Details One-way quantum computing in a decoherence-free subspace One-way quantum computing in a decoherence-free subspace

2007-08-07

arxiv.org/abs/0708.0969v1

New J. Phys. 9, 201 (2007)

Physics

Quantum Physics

9 pages, 4 figures, RevTeX4

Scientific paper

10.1088/1367-2630/9/6/201

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 setup 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.

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