INL researchers have explored a fascinating quantum ability which lacks a classical explanation: the capacity to detect objects without traditional physical interaction. Rafael Wagner and Anita Camillini, INL PhD candidates, alongside the research group-leader Ernesto F. Galvão, have published a paper describing the revolutionary approach that challenges conventional concepts of detection (Quantum, "Coherence and contextuality in a Mach-Zehnder interferometer").

Imagine being able to identify something without actually touching it – similarly to diagnosis a hidden fracture without an X-ray or recognising a distant voice without hearing it directly. This study explores how quantum computers can achieve that, and detect objects without direct interaction.

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