Entangled singularity patterns of photons in Ince-Gauss modes

Mario Krenn, Robert Fickler, Marcus Huber, Radek Lapkiewicz, William Plick, Sven Ramelow, and Anton Zeilinger
Phys. Rev. A 87, 012326 – Published 23 January 2013
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Abstract

Photons with complex spatial mode structures open up possibilities for new fundamental high-dimensional quantum experiments and for novel quantum information tasks. Here we show entanglement of photons with complex vortex and singularity patterns called Ince-Gauss modes. In these modes, the position and number of singularities vary depending on the mode parameters. We verify two-dimensional and three-dimensional entanglement of Ince-Gauss modes. By measuring one photon and thereby defining its singularity pattern, we nonlocally steer the singularity structure of its entangled partner, while the initial singularity structure of the photons is undefined. In addition we measure an Ince-Gauss specific quantum-correlation function with possible use in future quantum communication protocols.

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  • Received 21 November 2012

DOI:https://doi.org/10.1103/PhysRevA.87.012326

©2013 American Physical Society

Authors & Affiliations

Mario Krenn1,2,*, Robert Fickler1,2, Marcus Huber3, Radek Lapkiewicz1,2, William Plick1,2, Sven Ramelow1,2, and Anton Zeilinger1,2,4,*

  • 1Quantum Optics, Quantum Nanophysics, Quantum Information, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria
  • 2Institute for Quantum Optics and Quantum Information, Boltzmanngasse 3, Vienna A-1090, Austria
  • 3University of Bristol, Department of Mathematics, Bristol BS8 1TW, United Kingdom
  • 4Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria

  • *Corresponding authors: mario.krenn@univie.ac.at and anton.zeilinger@univie.ac.at

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Issue

Vol. 87, Iss. 1 — January 2013

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