Showing quant-phShow all
3 papers · 1 filter
quant-ph2025
Entanglement recycling in two-step port-based teleportation
Piotr Kopszak, Dmitry Grinko, Adam Burchardt +3
A protocol involving the repetitive (twofold, to be precise) application of PBT protocol to the same resource is studied. The quantities characterizing the resulting protocol, so-c…
quant-ph2020
Optimal Multi-port-based Teleportation Schemes
Marek Mozrzymas, Michał Studziński, Piotr Kopszak
In this paper, we introduce optimal versions of a multi-port based teleportation scheme allowing to send a large amount of quantum information. We fully characterise probabilistic…
quant-ph2019
Positive Maps From Irreducibly Covariant Operators
Piotr Kopszak, Marek Mozrzymas, Michał Studziński
In this paper, we discuss positive maps induced by (irreducibly) covariant linear operators for finite groups. The application of group theory methods allows deriving some new resu…