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Towards the Device-independent Certification of a Quantum Memory by Sekatski, Pavel; Bancal, Jean-Daniel; Ioannou, Marie; Afzelius, Mikael; Brunner, Nicolas is a scholarly article available to read on EtoBox.

What is Towards the Device-independent Certification of a Quantum Memory about?

Quantum memories represent one of the main ingredients of future quantum communication networks. Their certification is therefore a key challenge. Here we develop efficient certification methods for quantum memories. Considering a device-independent approach, where no a priori characterisation of sources or measurement devices is required, we develop a robust self-testing method for quantum memories. We then illustrate the practical relevance of our technique in a relaxed scenario by certifying a fidelity of 0.87 in a recent solid-state ensemble quantum memory experiment. More generally, our methods apply for the characterisation of any device implementing a qubit identity quantum channel.

Author

Sekatski, Pavel; Bancal, Jean-Daniel; Ioannou, Marie; Afzelius, Mikael; Brunner, Nicolas

Published

2023

Language

EN