1,175 research outputs found
Anonymity for practical quantum networks
Quantum communication networks have the potential to revolutionise
information and communication technologies. Here we are interested in a
fundamental property and formidable challenge for any communication network,
that of guaranteeing the anonymity of a sender and a receiver when a message is
transmitted through the network, even in the presence of malicious parties. We
provide the first practical protocol for anonymous communication in realistic
quantum networks.Comment: 5 pages, published versio
Demonstration of Einstein-Podolsky-Rosen Steering Using Hybrid Continuous- and Discrete-Variable Entanglement of Light
Einstein-Podolsky-Rosen steering is known to be a key resource for one-sided
device-independent quantum information protocols. Here we demonstrate steering
using hybrid entanglement between continuous- and discrete-variable optical
qubits. To this end, we report on suitable steering inequalities and detail the
implementation and requirements for this demonstration. Steering is
experimentally certified by observing a violation by more than 5 standard
deviations. Our results illustrate the potential of optical hybrid entanglement
for applications in heterogeneous quantum networks that would interconnect
disparate physical platforms and encodings
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