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Simple scheme for expanding photonic cluster states for quantum information

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Title: Simple scheme for expanding photonic cluster states for quantum information
Authors: Kalasuwan, P. Browse this author
Mendoza, G. Browse this author
Laing, A. Browse this author
Nagata, T. Browse this author
Coggins, J. Browse this author
Callaway, M. Browse this author
Takeuchi, S. Browse this author →KAKEN DB
Stefanov, A. Browse this author
O'Brien, J. L. Browse this author
Issue Date: 1-Jun-2010
Publisher: Optical Society of America
Journal Title: Journal of the Optical Society of America B: Optical Physics
Volume: 27
Issue: 6
Start Page: A181
End Page: A184
Publisher DOI: 10.1364/JOSAB.27.00A181
Abstract: We show how an entangled cluster state encoded in the polarization of single photons can be straightforwardly expanded by deterministically entangling additional qubits encoded in the path degree of freedom of the constituent photons. This can be achieved using a polarization-path controlled-phase gate. We experimentally demonstrate a practical and stable realization of this approach by using a Sagnac interferometer to entangle a path qubit and polarization qubit on a single photon. We demonstrate precise control over phase of the path qubit to change the measurement basis and experimentally demonstrate properties of measurement-based quantum computing using a two-photon, three-qubit cluster state.
Rights: © 2010 Optical Society of America
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 竹内 繁樹

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