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quant-ph2026
Characterizing Photonic Partial Distinguishability Through Gram Matrix Tomography
Marcin Kotowski, Marco Robbio, Oliver Reardon-Smith +4
Partial distinguishability affects multiphoton interference, which is central to large-scale photonic experiments such as Boson Sampling and to applications of multiphoton states a…
quant-ph2026
Randomized simulation of quantum channels using small ancilla
Marcin Kotowski, Michał Kotowski
We study the problem of implementing a quantum channel using a small ancilla with classical randomization and postselection on an output failure flag. The simulation is probabilist…
quant-ph2026
Tight bounds on recurrence time in closed quantum systems
Marcin Kotowski, Michał Oszmaniec
The evolution of an isolated quantum system inevitably exhibits recurrence: the state returns to the vicinity of its initial condition after finite time. Despite its fundamental na…