Extremal steering assemblages

verfasst von

Thomas Cope, Tobias J. Osborne

Abstract

Nonlocal correlations between a fully characterized quantum system and an untrusted black box device are described by an assemblage of conditional quantum states. These assemblages form a convex set, whose extremal points are relevant in many operational contexts. We give necessary and sufficient conditions for an assemblage to be extremal using linear independence conditions and an algorithm to decompose a generic assemblage into extremal points. A matlab implementation of this algorithm is also provided.

Organisationseinheit(en)

Institut für Theoretische Physik
QuantumFrontiers
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)

Typ

Artikel

Journal

Physical Review A

Band

106

ISSN

2469-9926

Publikationsdatum

30.08.2022

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atom- und Molekularphysik sowie Optik

Elektronische Version(en)

https://doi.org/10.1103/PhysRevA.106.022221 (Zugang: Geschlossen)
https://doi.org/10.48550/arXiv.2107.07614 (Zugang: Offen)