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Proceedings Paper

Proposal to produce two and four qubits with spatial modes of two photons
Author(s): Enrique J. Galvez
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Paper Abstract

This article presents a proposal for preparing photon pairs in states that are entangled in their spatial modes. The method allows the encoding of any pair of spatial modes that is desired, without restrictions; a procedure that up to now has been elusive. This method consists of three steps: preparing photon pairs in polarization-entangled states, filtering the spatial mode, and use of polarization interferometers with diffractive mode-encoding elements to effect entanglement swapping between polarization and spatial modes. An extension of the method consists of entangling polarization and spatial mode, allowing the preparation of a 4-qubit cluster state of two photons.

Paper Details

Date Published: 10 February 2012
PDF: 5 pages
Proc. SPIE 8274, Complex Light and Optical Forces VI, 82740G (10 February 2012); doi: 10.1117/12.909439
Show Author Affiliations
Enrique J. Galvez, Colgate Univ. (United States)

Published in SPIE Proceedings Vol. 8274:
Complex Light and Optical Forces VI
Enrique J. Galvez; David L. Andrews; Jesper Glückstad; Marat S. Soskin, Editor(s)

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