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arXiv · 1908.01016

Talbot Effect of orbital angular momentum lattices with single photons

Sacha Schwarz·Connor Kapahi·Ruoxuan Xu·Andrew R. Cameron·Dusan Sarenac·Jean-Philippe W. MacLean·Katanya B. Kuntz·David G. Cory·Thomas Jennewein·Kevin J. Resch·Dmitry A. Pushin
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Abstract

The self-imaging, or Talbot Effect, that occurs with the propagation of periodically structured waves has enabled several unique applications in optical metrology, image processing, data transmission, and matter-wave interferometry. In this work, we report on the first demonstration of a Talbot Effect with single photons prepared in a lattice of orbital angular momentum (OAM) states. We observe that upon propagation, the wavefronts of the single photons manifest self-imaging whereby the OAM lattice intensity profile is recovered. Furthermore, we show that the intensity at fractional Talbot distances is indicative of a periodic helical phase structure corresponding to a lattice of OAM states. This phenomenon is a powerful addition to the toolbox of orbital angular momentum and spin-orbit techniques that have already enabled many recent developments in quantum optics.

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Sacha Schwarz, Connor Kapahi, Ruoxuan Xu, Andrew R. Cameron, Dusan Sarenac, Jean-Philippe W. MacLean, Katanya B. Kuntz, David G. Cory, Thomas Jennewein, Kevin J. Resch, Dmitry A. Pushin. 2019-08-02. Talbot Effect of orbital angular momentum lattices with single photons. https://doi.org/10.1103/physreva.101.043815

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