34 citations · 303 across the 27 of their papers we have counts for
28 papers
Local certification of unitary operations
Ryszard Kukulski, Mateusz Stępniak, Kamil Hendzel +3
In this work, we analyze the local certification of unitary quantum channels, which is a natural extension of quantum hypothesis testing. A particular case of a quantum channel ope…
Hybrid quantum-classical computation for automatic guided vehicles scheduling
Tomasz Śmierzchalski, Jakub Pawłowski, Artur Przybysz +6
Motivated by recent efforts to develop quantum computing for practical, industrial-scale challenges, we demonstrate the effectiveness of state-of-the-art hybrid (not necessarily qu…
Matrix logistic map: fractal spectral distributions and transfer of chaos
Łukasz Pawela, Karol Życzkowski
The standard logistic map, , serves as a paradigmatic model to demonstrate how apparently simple non-linear equations lead to complex and chaotic dynamics. In this work…
Strategies for single-shot discrimination of process matrices
Paulina Lewandowska, Łukasz Pawela, Zbigniew Puchała
The topic of causality has recently gained traction quantum information research. This work examines the problem of single-shot discrimination between process matrices which are an…
On the probabilistic quantum error correction
Ryszard Kukulski, Łukasz Pawela, Zbigniew Puchała
Probabilistic quantum error correction is an error-correcting procedure which uses postselection to determine if the encoded information was successfully restored. In this work, we…
Storage and retrieval of von Neumann measurements
Paulina Lewandowska, Ryszard Kukulski, Łukasz Pawela +1
This work examines the problem of learning an unknown von Neumann measurement of dimension from a finite number of copies. To obtain a faithful approximation of the given measu…
Excluding false negative error in certification of quantum channels
Aleksandra Krawiec, Łukasz Pawela, Zbigniew Puchała
Certification of quantum channels is based on quantum hypothesis testing and involves also preparation of an input state and choosing the final measurement. This work primarily foc…
On the optimal certification of von Neumann measurements
Paulina Lewandowska, Aleksandra Krawiec, Ryszard Kukulski +2
In this report we study certification of quantum measurements, which can be viewed as the extension of quantum hypotheses testing. This extension involves also the study of the inp…
Perturbation of the numerical range of unitary matrices
Ryszard Kukulski, Paulina Lewandowska, Łukasz Pawela
In this work we show how to approach the problem of manimulating the numerical range of a unitary matrix. This task has far-reaching impact on the study of discrimination of quantu…
Optimal representation of quantum channels
Paulina Lewandowska, Ryszard Kukulski, Łukasz Pawela
This work shows an approach to reduce the dimensionality of matrix representations of quantum channels. It is achieved by finding a base of the cone of positive semidefinite matric…
Discrimination of POVMs with rank-one effects
Aleksandra Krawiec, Łukasz Pawela, Zbigniew Puchała
The main goal of this work is to provide an insight into the problem of discrimination of positive operator valued measures with rank-one effects. It is our intention to study mult…
Rapid and Robust generation of Einstein--Podolsky--Rosen pairs with Spin Chains
Kieran N. Wilkinson, Marta P. Estarellas, Timothy P. Spiller +1
We investigate the ability of dimerized spin chains with defects to generate EPR pairs to very high fidelity through their natural dynamics. We propose two protocols based on diffe…
Conditional entropic uncertainty relations for Tsallis entropies
Dariusz Kurzyk, Łukasz Pawela, Zbigniew Puchała
The entropic uncertainty relations are a very active field of scientific inquiry. Their applications include quantum cryptography and studies of quantum phenomena such as correlati…
Almost all quantum channels are equidistant
Ion Nechita, Zbigniew Puchała, Łukasz Pawela +1
In this work we analyze properties of generic quantum channels in the case of large system size. We use random matrix theory and free probability to show that the distance between…
Properties of quantum stochastic walks from the asymptotic scaling exponent
Krzysztof Domino, Adam Glos, Mateusz Ostaszewski +2
This work focuses on the study of quantum stochastic walks, which are a generalization of coherent, i. e. unitary quantum walks. Our main goal is to present a measure of a coherenc…
Quantum games on evolving random networks
Łukasz Pawela
We study the advantages of quantum strategies in evolutionary social dilemmas on evolving random networks. We focus our study on the two-player games: prisoner's dilemma, snowdrift…
Quantifying channels output similarity with applications to quantum control
Łukasz Pawela, Zbigniew Puchała
In this work we aim at quantifying quantum channel output similarity. In order to achieve this, we introduce the notion of quantum channel superfidelity, which gives us an upper bo…
Central limit theorem for reducible and irreducible open quantum walks
Przemysław Sadowski, Łukasz Pawela
In this work we aim at proving central limit theorems for open quantum walks on . We study the case when there are various classes of vertices in the network. Further…
Relativistic quantum pseudo-telepathy
Piotr Gawron, Łukasz Pawela
We analyze the impact of the Unruh effect on the quantum Magic Square game. We find the values of acceleration parameter for which quantum strategy yields higher players' winning p…
Generalized open quantum walks on Apollonian networks
Ł. Pawela, P. Gawron, J. A. Miszczak +1
We introduce the model of generalized open quantum walks on networks using the Transition Operation Matrices formalism. We focus our analysis on the mean first passage time and the…
Various methods of optimizing control pulses for quantum systems with decoherence
Łukasz Pawela, Przemysław Sadowski
We study three methods of obtaining an approximation of unitary evolution of a quantum system under decoherence. We use three methods of optimizing the control pulses: genetic opti…
Quantum control robust with coupling with an external environment
Łukasz Pawela, Zbigniew Puchała
We study coherent quantum control strategy which is robust with respect to coupling with an external environment. We model this interaction by appending an additional subsystem to…
Decoherence effects in the quantum qubit flip game using Markovian approximation
Piotr Gawron, Dariusz Kurzyk, Łukasz Pawela
We are considering a quantum version of the penny flip game, whose implementation is influenced by the environment that causes decoherence of the system. In order to model the deco…
General model for a entanglement-enhanced composed quantum game on a two-dimensional lattice
Jarosław Adam Miszczak, Łukasz Pawela, Jan Sładkowski
We introduce a method of analyzing entanglement enhanced quantum games on regular lattices of agents. Our method is valid for setups with periodic and non-periodic boundary conditi…