Measuring only the joint spectral intensity of a time-bin entangled two-photon state suffices to violate the CGLMP Bell inequality up to dimension 8 using genuinely multi-outcome measurements.
Frank-Wolfe and friends: a journey into projection-free first-order optimization methods
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abstract
Invented some 65 years ago in a seminal paper by Marguerite Straus-Frank and Philip Wolfe, the Frank-Wolfe method recently enjoys a remarkable revival, fuelled by the need of fast and reliable first-order optimization methods in Data Science and other relevant application areas. This review tries to explain the success of this approach by illustrating versatility and applicability in a wide range of contexts, combined with an account on recent progress in variants, both improving on the speed and efficiency of this surprisingly simple principle of first-order optimization.
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Observing High-dimensional Bell Inequality Violations using Multi-Outcome Spectral Measurements
Measuring only the joint spectral intensity of a time-bin entangled two-photon state suffices to violate the CGLMP Bell inequality up to dimension 8 using genuinely multi-outcome measurements.