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Interference phenomena are often claimed to resist classical explanation.However, such claims are undermined by the fact that the specific aspects ofthe phenomenology upon which they are based can in fact be reproduced in anoncontextual ontological model [Catani et al., Quantum 7, 1119 (2023)]. Thisraises the question of what other aspects of the phenomenology of interferencedo in fact resist classical explanation. We answer this question bydemonstrating that the most basic quantum wave-particle duality relation, whichexpresses the precise tradeoff between path distinguishability and fringevisibility, cannot be reproduced in any noncontextual model. We do this byshowing that it is a specific type of uncertainty relation and then leveraginga recent result establishing that noncontextuality restricts the functionalform of this uncertainty relation [Catani et al., Phys. Rev. Lett. 129, 240401(2022)]. Finally, we discuss what sorts of interferometric experiment candemonstrate contextuality via the wave-particle duality relation.

Aspects of the phenomenology of interference that are genuinely nonclassical