Taking photos of quantum entanglement

Baptiste Courme; Chloé Vernière; Patrick Cameron; Raj Pandya; Hugo Defienne

doi:10.1117/12.3022601

11 June 2024 Taking photos of quantum entanglement

Baptiste Courme, Chloé Vernière, Patrick Cameron, Raj Pandya, Hugo Defienne

Proceedings Volume PC12993, Quantum Technologies 2024; PC129930D (2024) https://doi.org/10.1117/12.3022601
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Entanglement is a central resource in quantum technologies. In this respect, high-dimensional entangled states are very promising for developing robust quantum communication schemes and enhanced imaging protocols. Being able to quantify high-dimensional entanglement quickly and accurately is therefore essential. However, to date, all experimental methods use assumptions about the detected state or imperfect measurement techniques, such as single-outcomes and accidental subtractions. Entanglement certification processes are therefore not only slow, but they also contain loopholes, which is not acceptable in adversarial scenarios such as quantum key distribution (QKD). In our work, we demonstrate the certification of high-dimensional entanglement using an event-based single-photon sensitive camera by performing measurements in two mutually unbiased bases. Our work provides an experimental method allowing for the efficient characterization of high-dimensional quantum states, paving the way for the development of high-dimensional QKD protocols and practical photon-pairs-based quantum imaging approaches.

Conference Presentation

Citation Download Citation

Baptiste Courme, Chloé Vernière, Patrick Cameron, Raj Pandya, and Hugo Defienne "Taking photos of quantum entanglement", Proc. SPIE PC12993, Quantum Technologies 2024, PC129930D (11 June 2024); https://doi.org/10.1117/12.3022601

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