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Near-perfect sorting of orbital angular momentum and angular position states of light

O’Sullivan, Malcolm N. and Mirhosseini, Mohammad and Malik, Mehul and Boyd, Robert W. (2012) Near-perfect sorting of orbital angular momentum and angular position states of light. Optics Express, 20 (22). pp. 24444-24449. ISSN 1094-4087.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Boyd, Robert W.0000-0002-1234-2265
Additional Information:© 2012 Optical Society of America. Received 14 Aug 2012; revised 27 Sep 2012; accepted 27 Sep 2012; published 11 Oct 2012. This work was supported by the DARPA InPho program and the Canadian Excellence Research Chair (CERC) program.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Canada Research Chairs ProgramUNSPECIFIED
Issue or Number:22
Classification Code:OCIS codes: (200.2605) Free-space optical communication; (050.4865) Optical vortices; (060.5565) Quantum communications
Record Number:CaltechAUTHORS:20190716-093627981
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Official Citation:Malcolm N. O’Sullivan, Mohammad Mirhosseini, Mehul Malik, and Robert W. Boyd, "Near-perfect sorting of orbital angular momentum and angular position states of light," Opt. Express 20, 24444-24449 (2012)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97165
Deposited By: Tony Diaz
Deposited On:16 Jul 2019 16:40
Last Modified:03 Oct 2019 21:28

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