Linking entanglement detection and state tomography via quantum 2-designs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F19%3A00113862" target="_blank" >RIV/00216224:14330/19:00113862 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1367-2630/aaf8cf" target="_blank" >http://dx.doi.org/10.1088/1367-2630/aaf8cf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1367-2630/aaf8cf" target="_blank" >10.1088/1367-2630/aaf8cf</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Linking entanglement detection and state tomography via quantum 2-designs

Popis výsledku v původním jazyce

We present an experimentally feasible and efficient method for detecting entangled states with measurements that extend naturally to a tomographically complete set. Our detection criterion for bipartite systems with equal dimensions is based on measurements from subsets of a quantum 2-design, e.g. mutually unbiased bases or symmetric informationally complete states, and has several advantages over standard entanglement witnesses. First, as more detectors in the measurement are applied, there is a higher chance of witnessing a larger set of entangled states, in such a way that the measurement setting converges to a complete setup for quantum state tomography. Secondly, our method is twice as effective as standard witnesses in the sense that both upper and lower bounds can be derived. Thirdly, the scheme can be readily applied to measurement-device-independent scenarios.

Název v anglickém jazyce

Linking entanglement detection and state tomography via quantum 2-designs

Popis výsledku anglicky

We present an experimentally feasible and efficient method for detecting entangled states with measurements that extend naturally to a tomographically complete set. Our detection criterion for bipartite systems with equal dimensions is based on measurements from subsets of a quantum 2-design, e.g. mutually unbiased bases or symmetric informationally complete states, and has several advantages over standard entanglement witnesses. First, as more detectors in the measurement are applied, there is a higher chance of witnessing a larger set of entangled states, in such a way that the measurement setting converges to a complete setup for quantum state tomography. Secondly, our method is twice as effective as standard witnesses in the sense that both upper and lower bounds can be derived. Thirdly, the scheme can be readily applied to measurement-device-independent scenarios.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

New Journal of Physics

ISSN

1367-2630

e-ISSN

—

Svazek periodika

21

Číslo periodika v rámci svazku

013012

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

20

Strana od-do

1-20

Kód UT WoS článku

000456276000003

EID výsledku v databázi Scopus

2-s2.0-85062536065