Incompatibility of quantum instruments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F24%3A00137779" target="_blank" >RIV/00216224:14330/24:00137779 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.22331/q-2024-02-12-1246" target="_blank" >http://dx.doi.org/10.22331/q-2024-02-12-1246</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22331/q-2024-02-12-1246" target="_blank" >10.22331/q-2024-02-12-1246</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Incompatibility of quantum instruments

Popis výsledku v původním jazyce

Quantum instruments describe outcome probability as well as state change induced by measurement of a quantum system. Incompatibility of two instruments, i. e. the impossibility to realize them simultaneously on a given quantum system, generalizes incompatibility of channels and incompatibility of positive operator -valued measures (POVMs). We derive implications of instrument compatibility for the induced POVMs and channels. We also study relation of instrument compatibility to the concept of non -disturbance. Finally, we prove equivalence between instrument compatibility and postprocessing of certain instruments, which we term complementary instruments. We illustrate our findings on examples of various classes of instruments.

Název v anglickém jazyce

Incompatibility of quantum instruments

Popis výsledku anglicky

Quantum instruments describe outcome probability as well as state change induced by measurement of a quantum system. Incompatibility of two instruments, i. e. the impossibility to realize them simultaneously on a given quantum system, generalizes incompatibility of channels and incompatibility of positive operator -valued measures (POVMs). We derive implications of instrument compatibility for the induced POVMs and channels. We also study relation of instrument compatibility to the concept of non -disturbance. Finally, we prove equivalence between instrument compatibility and postprocessing of certain instruments, which we term complementary instruments. We illustrate our findings on examples of various classes of instruments.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10200 - Computer and information sciences

Projekt

<a href="/cs/project/8C20005" target="_blank" >8C20005: Experimetnally-oriented Device Independent CrypTography</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

QUANTUM

ISSN

2521-327X

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

1246

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

31

Strana od-do

1-31

Kód UT WoS článku

001163135300001

EID výsledku v databázi Scopus

2-s2.0-85185776004