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arXiv · 2604.04691

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

Sara Franco·Anita Camillini·Ernesto F. Galvão
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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.

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Sara Franco, Anita Camillini, Ernesto F. Galvão. 2026-04-06. Interaction-free measurement of multiple objects using a universal integrated photonic processor. https://doi.org/10.1088/2058-9565%2Fae8df9

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