Phys. Rev. A 76, 052326 (2007) [10 pages]One-way quantum computation with four-dimensional photonic quditsReceived 14 August 2007; published 29 November 2007 We consider the possibility of performing linear optical quantum computations making use of extra photonic degrees of freedom. In particular, we focus on the case where we use photons as quadbits, four-dimensional photonic qudits. The basic 2-quadbit cluster state is a hyperentangled state across polarization and two spatial mode degrees of freedom. We examine the nondeterministic methods whereby such states can be created from single photons and/or Bell pairs and then give some mechanisms for performing higher-dimensional fusion gates. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.052326
DOI:
10.1103/PhysRevA.76.052326
PACS:
03.67.Lx, 03.65.Ud
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