23 citations · 49 across the 6 of their papers we have counts for
7 papers
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…
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…
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…
Efficient reconstruction, benchmarking and validation of cross-talk models in readout noise in near-term quantum devices
Jan Tuziemski, Filip B. Maciejewski, Joanna Majsak +5
Readout errors contribute significantly to the overall noise affecting present-day quantum computers. However, the complete characterization of generic readout noise is infeasible…
Saturation and recurrence of quantum complexity in random local quantum dynamics
Michał Oszmaniec, Marcin Kotowski, Michał Horodecki +1
Quantum complexity is a measure of the minimal number of elementary operations required to approximately prepare a given state or unitary channel. Recently, this concept has found…
Random groups and Property (T): Żuk's theorem revisited
Marcin Kotowski, Michal Kotowski
We provide a full and rigorous proof of a theorem attributed to Żuk, stating that random groups in the Gromov density model for d > 1/3 have property (T) with high probability. The…
Universal nonlinear entanglement witnesses
Marcin Kotowski, Michal Kotowski, Marek Kus
We give a universal recipe for constructing nonlinear entanglement witnesses able to detect non-classical correlations in arbitrary systems of distinguishable and/or identical part…