92 citations · 501 across the 27 of their papers we have counts for
12 papers · 1 filter
Transition from order to chaos in reduced quantum dynamics
Waldemar Kłobus, Paweł Kurzyński, Marek Kuś +3
We study a damped kicked top dynamics of a large number of qubits () and focus on an evolution of a reduced single-qubit subsystem. Each subsystem is subjecte…
Quantum chaos in the spin coherent state representation
Marek Kuś, Robert Przybycień
We use spin coherent states to compare classical and quantum evolution of a simple paradigmatic, discrete-time quantum dynamical system exhibiting chaotic behavior in the classical…
Ignorance is a bliss: mathematical structure of many-box models
Tomasz I. Tylec, Marek Kuś
We show that the propositional system of a many-box model is always a set-representable effect algebra. In particular cases of 2-box and 1-box models it is an orthomodular poset an…
Remarks on the tensor product structure of no-signaling theories
Tomasz I. Tylec, Marek Kuś
In the quantum logic framework we show that the no-signaling box model is a particular type of tensor product of the logics of single boxes. Such notion of tensor product is too st…
Quantum-phase synchronization
Lukas J. Fiderer, Marek Kuś, Daniel Braun
We study mechanisms that allow one to synchronize the quantum phase of two qubits relative to a fixed basis. Starting from one qubit in a fixed reference state and the other in an…
Classical simulation of fermionic linear optics augmented with noisy ancillas
Michał Oszmaniec, Jan Gutt, Marek Kuś
Fermionic linear optics is a model of quantum computation which is efficiently simulable on a classical probabilistic computer. We study the problem of a classical simulation of fe…
Fraction of isospectral states exhibiting quantum correlations
Michał Oszmaniec, Marek Kuś
For several types of correlations: mixed-state entanglement in systems of distinguishable particles, particle entanglement in systems of indistinguishable bosons and fermions and n…
When is a pure state of three qubits determined by its single-particle reduced density matrices?
Adam Sawicki, Michael Walter, Marek Kuś
Using techniques from symplectic geometry, we prove that a pure state of three qubits is up to local unitaries uniquely determined by its one-particle reduced density matrices exac…
Four-qubit entangled symmetric states with positive partial transpositions
J. Tura, R. Augusiak, P. Hyllus +3
We solve the open question of the existence of four-qubit entangled symmetric states with positive partial transpositions (PPT states). We reach this goal with two different approa…
Local unitary equivalence and distinguishability of arbitrary multipartite pure states
Adam Sawicki, Marek Kuś
We give an universal algorithm for testing the local unitary equivalence of states for multipartite system with arbitrary dimensions.
Searching for extremal PPT entangled states
Remigiusz Augusiak, Janusz Grabowski, Marek Kuś +1
We study extremality in various sets of states that have positive partial transposes. One of the tools we use for this purpose is the recently formulated criterion allowing to judg…
`Classical' quantum states
Marek Kuś, Ingemar Bengtsson
We show that several classes of mixed quantum states in finite-dimensional Hilbert spaces which can be characterized as being, in some respect, 'most classical' can be described an…