26 citations · 138 across the 26 of their papers we have counts for
4 papers · 1 filter
Quantum convolutional channels and multiparameter families of 2-unitary matrices
Rafał Bistroń, Jakub Czartowski, Karol Życzkowski
Many alternative approaches to construct quantum channels with large entangling capacity were proposed in the past decade, resulting in multiple isolated gates. In this work, we pu…
Iso-entangled bases and joint measurements
Flavio Del Santo, Jakub Czartowski, Karol Życzkowski +1
While entanglement between distant parties has been extensively studied, entangled measurements have received relatively little attention despite their significance in understandin…
Thermal recall: Memory-assisted Markovian thermal processes
Jakub Czartowski, A. de Oliveira Junior, Kamil Korzekwa
We develop a resource-theoretic framework that allows one to bridge the gap between two approaches to quantum thermodynamics based on Markovian thermal processes (which model memor…
Minimal-noise estimation of noncommuting rotations of a spin
Jakub Czartowski, Karol Życzkowski, Daniel Braun
We propose an analogue of interferometry to measure rotation of a spin by using two-spin squeezed states. Attainability of the Heisenberg limit for the estimation…