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

Abstract

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.

7 pages, 3 figures

References in corpus (2)

• Nonlinear interactions with an ultrahigh flux of broadband entangled photons
• Determining the dimensionality of bipartite orbital-angular-momentum entanglement using multi-sector phase masks

Cited by in corpus (6)

• High-dimensional quantum communication: benefits, progress, and future challenges
• Tailoring nonlinear processes for quantum optics with pulsed temporal-mode encodings
• Entangled Photon-Pair Sources based on three-wave mixing in bulk crystals
• Direct characterization of ultrafast energy-time entangled photon pairs
• Remotely projecting states of photonic temporal modes
• Optimal measurements for nonlocal correlations