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Experimental violation of a d-dimensional Bell inequality using energy-time entangled photons

We experimentally study the violation of the CGLMP inequality for entangled 2-qubit and 2-qutrit states with different degrees of entanglement using numerically optimized measurement settings. The qudits are encoded and manipulated in the frequency spectrum of broadband energy-time entangled photons by taking into account a spatial light modulator. The latter allows to discretize the spectrum into bins. By controlling each frequency bin individually, the generation of maximally and non-maximally entangled qutrits is verified through quantum state tomography.

preprint2015arXivOpen access
Sacha SchwarzBänz BessireAndré Stefanov
quant-ph
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Open access3 authors1 topic
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Sacha SchwarzBänz BessireAndré Stefanov

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