Experimental semi-device-independent certification of entangled measurements

Abstract

Certifying the entanglement of quantum states with Bell inequalities allows one to guarantee the security of quantum information protocols independently of imperfections in the measuring devices. Here we present a similar procedure for witnessing entangled measurements, which play a central role in many quantum information tasks. Our procedure is termed semi-device-independent, as it uses uncharacterized quantum preparations of fixed Hilbert space dimension. Using a photonic setup, we experimentally certify an entangled measurement using measurement statistics only. We also apply our techniques to certify unentangled but nevertheless inherently quantum measurements.

arXiv comment7 pages, 2 figures

References in corpus (17)

• Bell nonlocality
• Device-independent security of quantum cryptography against collective attacks
• Measuring measurement
• Semi-device-independent security of one-way quantum key distribution
• Demonstration of a simple entangling optical gate and its use in Bell-state analysis
• Real time demonstration of high bitrate quantum random number generation with coherent laser light
• Maximum-likelihood estimation of quantum measurement
• Maximal violation of the I3322 inequality using infinite dimensional quantum systems
• Experimental estimation of the dimension of classical and quantum systems
• Experimental Device-independent Tests of Classical and Quantum Dimensions
• Semi-device independent random number expansion protocol with n to 1 quantum random access codes
• Device-independent certification of entangled measurements
• Semi-device-independent bounds on entanglement
• Device-independent demonstration of genuine multipartite entanglement
• Device-independent quantum key distribution secure against adversaries with no long-term quantum memory
• Quantum gate characterization in an extended Hilbert space
• Certifying entangled measurements in known Hilbert spaces

Cited by in corpus (10)

• Self-testing entangled measurements in quantum networks
• Testing dimension and non-classicality in communication networks
• Semi-device-independent characterisation of multipartite entangled states and measurements
• Almost qudits in the prepare-and-measure scenario
• Self-testing nonlocality without entanglement
• Device-independent certification of non-classical joint measurements via causal models
• A positive operator-valued measure for two-photon detection via sum-frequency generation
• Analytic Semi-device-independent Entanglement Quantification for Bipartite Quantum States
• Activation of entanglement in generalized entanglement swapping
• Communication scenario enables robust self-testing of n-party Greenberger-Horne-Zeilinger basis measurements