Work

Interaction-free measurement of multiple objects using a universal integrated photonic processor

Year: 2026

Type: article

Abstract: The phenomenon of interaction-free measurement (IFM) enables the probabilistic detection of an absorbing object with reduced photon absorption. We report the experimental implementation of a generalized IFM of multiple objects using a single quantum probe on the cloud-based Ascella photonic processor developed by Quandela. We demonstrate sequential IFM of up to 5 emulated absorbers using a single photon, significantly extending the original IFM scheme for a single object. The experimental error-mitigated results confirm the theoretical predictions for this sequential IFM setup, and demonstrate a practical approach to scaling IFM to more complex quantum interrogation tasks.

Source: Quantum Science and Technology

DOI: 10.1088/2058-9565/ae8df9

Authors: Sara Franco, Anita Camillini, Ernesto F Galvão

Institutions: International Iberian Nanotechnology Laboratory, University of Minho, Cineca, Universidade Federal Fluminense

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,895

Funders: Conselho Nacional de Desenvolvimento Científico e Tecnológico, H2020 European Research Council