en
Scientific article
Open access
English

Measurement-Device-Independent Entanglement Witnesses for All Entangled Quantum States

Published inPhysical review letters, vol. 110, no. 6
Publication date2013
Abstract

The problem of demonstrating entanglement is central to quantum information processing applications. Resorting to standard entanglement witnesses requires one to perfectly trust the implementation of the measurements to be performed on the entangled state, which may be an unjustified assumption. Inspired by the recent work of F. Buscemi [Phys. Rev. Lett. 108, 200401 (2012)], we introduce the concept of measurement-device-independent entanglement witnesses (MDI-EWs), which allow one to demonstrate entanglement of all entangled quantum states with untrusted measurement apparatuses. We show how to systematically obtain such MDI-EWs from standard entanglement witnesses. Our construction leads to MDI-EWs that are loss tolerant and can be implemented with current technology.

Citation (ISO format)
BRANCIARD, Cyril et al. Measurement-Device-Independent Entanglement Witnesses for All Entangled Quantum States. In: Physical review letters, 2013, vol. 110, n° 6. doi: 10.1103/PhysRevLett.110.060405
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0031-9007
490views
357downloads

Technical informations

Creation05/12/2014 4:43:00 PM
First validation05/12/2014 4:43:00 PM
Update time03/14/2023 9:13:10 PM
Status update03/14/2023 9:13:10 PM
Last indexation01/16/2024 9:59:15 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack