Certification of a functionality in a quantum network stage
V. Lipinska (TU Delft - QID/Wehner Group, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)
P.T. Lê (Leibniz Universität, TU Delft - QuTech Advanced Research Centre)
J. Ribeiro (TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - QID/Wehner Group)
Stephanie Wehner (Kavli institute of nanoscience Delft, TU Delft - Quantum Internet Division, TU Delft - Quantum Information and Software, TU Delft - QuTech Advanced Research Centre)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
We consider testing the ability of quantum network nodes to execute multi-round quantum protocols. Specifically, we examine protocols in which the nodes are capable of performing quantum gates, storing qubits and exchanging said qubits over the network a certain number of times. We propose a simple ping-pong test, which provides a certificate for the capability of the nodes to run certain multi-round protocols. We first show that in the noise-free regime the only way the nodes can pass the test is if they do indeed possess the desired capabilities. We then proceed to consider the case where operations are noisy, and provide an initial analysis showing how our test can be used to estimate parameters that allow us to draw conclusions about the actual performance of such protocols on the tested nodes. Finally, we investigate the tightness of this analysis using example cases in a numerical simulation.
help_outline