5 papers
Choi-level twirling of quantum channels: finite constructions and non-compact transformations
Marcin Markiewicz, Łukasz Pawela, Zbigniew Puchała
Twirling, i.e. averaging over symmetry actions, is a standard tool for reducing quantum states and channels to a symmetry-invariant form. We study channel twirling from the perspec…
Temporal-order-controlled Parrondo reversal in a periodically switched quantum walk acting on NEQR image states
Łukasz Pawela
We study a coherent reversible map of novel enhanced quantum representation (NEQR) image states, combining public permutations with a classically controlled Parrondo discrete-time…
Quantum walks on hypergraphs
Przemysław Sadowski, Łukasz Pawela, Paulina Lewandowska +1
In this work we introduce the concept of a quantum walk on a hypergraph. We show that the staggered quantum walk model is a special case of a quantum walk on a hypergraph.
QuantumInformation.jl---a Julia package for numerical computation in quantum information theory
Piotr Gawron, Dariusz Kurzyk, Łukasz Pawela
Numerical investigations are an important research tool in quantum information theory. There already exists a wide range of computational tools for quantum information theory imple…
Unconditional Security of a -State Quantum Key Distribution Protocol
Dariusz Kurzyk, Łukasz Pawela, Zbigniew Puchała
Quantum key distribution protocols constitute an important part of quantum cryptography, where the security of sensitive information arises from the laws of physics. In this paper…