Footprints of quantum pigeons
Gregory Reznik, Shrobona Bagchi, Justin Dressel, Lev Vaidman · Physical Review Research · 2020
This paper proposes a quantum setup violating the pigeonhole principle. It describes how the counterfactual reasoning of the paradox may be operationally grounded in the analysis of the tiny footprints left in the environment by the pigeons. Identifying the drawbacks of recent experiments of the quantum pigeonhole effect, the authors argue that a definitive experimental violation of the pigeonhole principle is still needed and propose an implementation using modern quantum computing hardware.