Work

Non-degenerate SPDC photon-pair source for UV-A illumination

Year: 2025

Type: article

Abstract: We present a frequency-correlated non-degenerate photon-pair source consisting of a second-order nonlinear crystal that generates ultraviolet UV-A and infrared light via spontaneous parametric down-conversion (SPDC). Quantum imaging and sensing techniques like quantum imaging with undetected light and quantum ghost imaging leverage wavelength correlations between down-converted photon pairs to decouple sensing and detection wavelengths, thereby exploiting established camera technology within the visible spectrum. Our results open up quantum sensing application scenarios in the ultraviolet domain, with potential implications for advancements in biomedical and non-destructive testing fields.

Source: Optics Express

DOI: 10.1364/oe.568162

Authors: Preetisha Goswami, Marta Gilaberte Basset, Jorge Fuenzalida, Markus Gräfe, Valerio Flavio Gili

Institutions: Technische Universität Darmstadt, Barcelona Institute of Science and Technology

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: Freistaat Thüringen, Fraunhofer-Gesellschaft, Horizon 2020 Framework Programme