Pixel entanglement: Experimental realization of optically entangled d=3 and d=6 qudits

Malcolm N. O'Sullivan-Hale*, Irfan Ali Khan, Robert W. Boyd, John C. Howell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

184 Scopus citations

Abstract

We demonstrate a simple experimental method for creating entangled qudits. Using transverse-momentum and position entanglement of photons emitted in spontaneous parametric down-conversion, we show entanglement between discrete regions of space, i.e., pixels. We map each photon onto as many as six pixels, where each pixel represents one level of our qudit state. The method is easily generalizable to create even higher dimensional, entangled states. Thus, the realization of quantum information processing in arbitrarily high dimensions is possible, allowing for greatly increased information capacity.

Original languageAmerican English
Article number220501
JournalPhysical Review Letters
Volume94
Issue number22
DOIs
StatePublished - 10 Jun 2005
Externally publishedYes

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