Recovery of quantum-entanglement after encountering an obstruction

Melanie McLaren; Thandeka Mhlanga; Miles J. Padgett; Filippus S. Roux; Andrew Forbes

doi:10.1117/12.2037651

25 February 2014 Recovery of quantum-entanglement after encountering an obstruction

Melanie McLaren, Thandeka Mhlanga, Miles J. Padgett, Filippus S. Roux, Andrew Forbes

Proceedings Volume 8999, Complex Light and Optical Forces VIII; 899918 (2014) https://doi.org/10.1117/12.2037651
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

Bessel-Gaussian (BG) modes possess unique characteristics that have been exploited in the classical world and which may also o er advantages over other modes in the quantum regime. We use the reconstruction property of BG modes to recover the degree of entanglement of our quantum state after encountering an obstruction. For BG modes, there exists a minimum distance behind an obstruction before reconstruction of the mode occurs. By moving the obstruction along the path of propagation of the entangled photon pairs, we quantitatively show a increase in the degree of entanglement as the obstruction moved beyond that minimum distance.

Citation Download Citation

Melanie McLaren, Thandeka Mhlanga, Miles J. Padgett, Filippus S. Roux, and Andrew Forbes "Recovery of quantum-entanglement after encountering an obstruction", Proc. SPIE 8999, Complex Light and Optical Forces VIII, 899918 (25 February 2014); https://doi.org/10.1117/12.2037651

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