159 citations · 1.4k across the 75 of their papers we have counts for
6 papers · 2 filters
Distinguishing classically indistinguishable states and channels
Kamil Korzekwa, Stanisław Czachórski, Zbigniew Puchała +1
We investigate an original family of quantum distinguishability problems, where the goal is to perfectly distinguish between quantum states that become identical under a comple…
Multiple-shot and unambiguous discrimination of von Neumann measurements
Zbigniew Puchała, Łukasz Pawela, Aleksandra Krawiec +2
We present an in-depth study of the problem of multiple-shot discrimination of von Neumann measurements in finite-dimensional Hilbert spaces. Specifically, we consider two scenario…
Simulating all quantum measurements using only projective measurements and postselection
Michał Oszmaniec, Filip B. Maciejewski, Zbigniew Puchała
We report an alternative scheme for implementing generalized quantum measurements that does not require the usage of auxiliary system. Our method utilizes solely: (a) classical ran…
Strategies for optimal single-shot discrimination of quantum measurements
Zbigniew Puchała, Łukasz Pawela, Aleksandra Krawiec +1
In this work we study the problem of single-shot discrimination of von Neumann measurements, which we associate with measure-and-prepare channels. There are two possible approaches…
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…
Unified approach to geometric and positive-map-based non-linear entanglement identifiers
Marcin Markiewicz, Adrian Kolodziejski, Zbigniew Puchala +3
Detecting quantumness of correlations (especially entanglement) is a very hard task even in the simplest case i.e. two-partite quantum systems. Here we provide an analysis whether…