Title:	Spatially correlated photonic qutrit pairs using pump beam modulation technique
Authors:	Ghosh, Debadrita Jennewein, Thomas Sinha, Urbasi
Issue Date:	2018
Publisher:	OSA Continuum
Citation:	Optical Society of America, 2018, Vol.1, p996-1011
Abstract:	Higher dimensional quantum systems have a very important role to play in quantum information, computation as well as communication. While the polarization degree of freedom of the photon is a common choice for many studies, it is restricted to only two orthogonal states, hence qubits for manipulation. In this paper, we theoretically model as well as experimentally verify a novel scheme of approximating photonic qutrits by modulating the pump beam in a spontaneous parametric down conversion process using a three-slit aperture. The emerging bi-photon fields behave like qutrits and are found to be highly correlated in the spatial degree of freedom and effectively represent spatially correlated qutrits with a Pearson coefficient as high as 0.9. In principle, this system provides us a scalable architecture for generating and experimenting with higher dimensional correlated qudits.
Description:	Open Access.
URI:	http://hdl.handle.net/2289/7233
ISSN:	2578-7519
Alternative Location:	https://arxiv.org/abs/1702.02581 https://doi.org/10.1364/OSAC.1.000996
Copyright:	2018 Optical Society of America
Appears in Collections:	Research Papers (LAMP)

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