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When More Light Means Less Quantum: Modeling Bell Inequality Degradation from Accidental Counts
Piotr Mironowicz, Mohamed Bourennane
We investigate how accidental counts, the detection events not originating from genuine entangled photon pairs, impact the observed violation of Bell inequalities in photonic exper…
Finite-size security analysis for quantum protocols: A Python framework using the Entropy Accumulation Theorem with graphical interface
Piotr Mironowicz, Mohamed Bourennane
We present a comprehensive software framework for the finite-size security analysis of quantum random number generation (QRNG) and quantum key distribution (QKD) protocols, based o…
Experimental implementation of dimension-dependent contextuality inequality
Emil Håkansson, Amelie Piveteau, Alban Seguinard +4
We present a derivation and experimental implementation of a dimension-dependent contextuality inequality to certify both the quantumness and dimensionality of a given system. Exis…
Optimization of experimental quantum randomness expansion
Amelie Piveteau, Alban Seguinard, Piotr Mironowicz +1
Quantum technologies provide many applications for information processing tasks that are impossible to realize within classical physics. These capabilities include such fundamental…
Experimental certification of more than one bit of quantum randomness in the two inputs and two outputs scenario
Alban Jean-Marie Seguinard, Amélie Piveteau, Piotr Mironowicz +1
One of the striking properties of quantum mechanics is the occurrence of the Bell-type non-locality. They are a fundamental feature of the theory that allows two parties that share…
Weak entanglement improves quantum communication using only product measurements
Amélie Piveteau, Alastair A. Abbott, Sadiq Muhammad +2
We show that weakly entangled states can improve communication over a qubit channel using only separate, interference-free, measurements of individual photons. We introduce a commu…