TY - JOUR
T1 - Measurement-Device-Independent Verification of Quantum Channels
AU - Graffitti, Francesco
AU - Pickston, Alexander
AU - Barrow, Peter
AU - Proietti, Massimiliano
AU - Kundys, Dmytro
AU - Rosset, Denis
AU - Ringbauer, Martin
AU - Fedrizzi, Alessandro
PY - 2020/1/10
Y1 - 2020/1/10
N2 - The capability to reliably transmit and store quantum information is an essential building block for future quantum networks and processors. Gauging the ability of a communication link or quantum memory to preserve quantum correlations is therefore vital for their technological application. Here, we experimentally demonstrate a measurement-device-independent protocol for certifying that an unknown channel acts as an entanglement-preserving channel. Our results show that, even under realistic experimental conditions, including imperfect single-photon sources and the various kinds of noise-in the channel or in detection-where other verification means would fail or become inefficient, the present verification protocol is still capable of affirming the quantum behavior in a faithful manner with minimal trust on the measurement device.
AB - The capability to reliably transmit and store quantum information is an essential building block for future quantum networks and processors. Gauging the ability of a communication link or quantum memory to preserve quantum correlations is therefore vital for their technological application. Here, we experimentally demonstrate a measurement-device-independent protocol for certifying that an unknown channel acts as an entanglement-preserving channel. Our results show that, even under realistic experimental conditions, including imperfect single-photon sources and the various kinds of noise-in the channel or in detection-where other verification means would fail or become inefficient, the present verification protocol is still capable of affirming the quantum behavior in a faithful manner with minimal trust on the measurement device.
UR - http://www.scopus.com/inward/record.url?scp=85078273078&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.010503
DO - 10.1103/PhysRevLett.124.010503
M3 - Article
C2 - 31976691
SN - 0031-9007
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
M1 - 010503
ER -