Scheme for on-chip verification of transverse mode entanglement using the electro-optic effect

Optics Express
Divya BharadwajK Banaszek

Abstract

A key ingredient in emerging quantum-enhanced technologies is the ability to coherently manipulate and detect superpositions of basis states. In integrated optics implementations, transverse spatial modes supported by multimode structures offer an attractive carrier of quantum superpositions. Here we propose an integrated dynamic mode converter based on the electro-optic effect in nonlinear channel waveguides for deterministic transformations between mutually non-orthogonal bases of spatial modes. We theoretically show its capability to demonstrate a violation of a Bell-type Clauser-Horne-Shimony-Holt inequality by measuring spatially mode-entangled photon pairs generated by an integrated photon pair source. The proposed configuration, numerically studied for the potassium titanyl phosphate (KTP) material, can be easily implemented using standard integrated optical fabrication technology.

References

Dec 11, 1995·Physical Review Letters·P G KwiatY Shih
Jun 21, 2001·Physical Review Letters·K SanakaT Kuga
Sep 6, 2002·Applied Optics·Kiyoshi Kato, Eiko Takaoka
Aug 19, 2008·Optics Letters·Andreas Eckstein, Christine Silberhorn
Jan 23, 2009·Optics Express·A MartinS Tanzilli
Apr 7, 2010·Physical Review Letters·Peter J MosleyChristine Silberhorn
Oct 4, 2012·Physical Review Letters·Yoonshik KangHee Su Park
Mar 23, 2013·Applied Optics·Daniel PerryStephen Schultz

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