Proposal to produce two and four qubits with spatial modes of two photons

Enrique J. Galvez

doi:10.1117/12.909439

10 February 2012 Proposal to produce two and four qubits with spatial modes of two photons

Enrique J. Galvez

Proceedings Volume 8274, Complex Light and Optical Forces VI; 82740G (2012) https://doi.org/10.1117/12.909439
Event: SPIE OPTO, 2012, San Francisco, California, United States

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.

Citation Download Citation

Enrique J. Galvez "Proposal to produce two and four qubits with spatial modes of two photons", Proc. SPIE 8274, Complex Light and Optical Forces VI, 82740G (10 February 2012); https://doi.org/10.1117/12.909439

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