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arXiv:1208.2891quant-ph

Near-Perfect Sorting of Orbital Angular Momentum and Angular Position States of Light

Malcolm N. O'Sullivan, Mohammad Mirhosseini, Mehul Malik, Robert W. Boyd

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Abstract

We present a novel method for efficient sorting of photons prepared in states of orbital angular momentum (OAM) and angular position (ANG). A log-polar optical transform is used in combination with a holographic beam-splitting method to achieve better mode discrimination and reduced cross-talk than reported previously. Simulating this method for 7 modes, we have calculated an improved mutual information of 2.43 bits/photon and 2.29 bits/photon for OAM and ANG modes respectively. In addition, we present preliminary results from an experimental implementation of this technique. This method is expected to have important applications for high-dimensional quantum key distribution systems.

arXiv comments
Journal reference
Optics Express, Vol. 20, Issue 22, pp. 24444-24449 (2012)
DOI
doi:10.1364/OE.20.024444
Subjects
quant-phQuantum Physics physics.opticsOptics

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  1. The $200 Billion Rip-Off: Our broadband future was stolen (2007) 1 comment

    • I never said that QT is a really available commercial technology. Look I wrote: >> … firstly because "Quantum Teleportation (QT)" is available soon enough for a broader audience than just Physicists … Look up: doi:10.1038/492022a if you don't believe in QT. Then I'm glad to see…

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