Efficient high-dimensional entanglement imaging with a compressive-sensing double-pixel camera

Gregory A. Howland*, John C. Howell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Scopus citations


We implement a double-pixel compressive-sensing camera to efficiently characterize, at high resolution, the spatially entangled fields that are produced by spontaneous parametric down-conversion. This technique leverages sparsity in spatial correlations between entangled photons to improve acquisition times over raster scanning by a scaling factor up to n2= log(n) for n-dimensional images.We image at resolutions up to 1024 dimensions per detector and demonstrate a channel capacity of 8.4 bits per photon. By comparing the entangled photons' classical mutual information in conjugate bases, we violate an entropic Einstein-Podolsky-Rosen separability criterion for all measured resolutions. More broadly, our result indicates that compressive sensing can be especially effective for higher-order measurements on correlated systems.

Original languageAmerican English
Article number011013
JournalPhysical Review X
Issue number1
StatePublished - 2013
Externally publishedYes


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