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Device-independent secret-key-rate analysis for quantum repeaters
Timo Holz, Hermann Kampermann, Dagmar Bruß
The device-independent approach to quantum key distribution (QKD) aims to establish a secret key between two or more parties with untrusted devices, potentially under full control…
Analysis of quantum error correction with symmetric hypergraph states
Thomas Wagner, Hermann Kampermann, Dagmar Bruß
Graph states have been used to construct quantum error correction codes for independent errors. Hypergraph states generalize graph states, and symmetric hypergraph states have been…
Measurement-device-independent randomness generation with arbitrary quantum states
Felix Bischof, Hermann Kampermann, Dagmar Bruß
Measurements of quantum systems can be used to generate classical data that is truly unpredictable for every observer. However, this true randomness needs to be discriminated from…
Multipartite entanglement detection for hypergraph states
Maddalena Ghio, Daniele Malpetti, Matteo Rossi +2
We study the entanglement properties of quantum hypergraph states of qubits, focusing on multipartite entanglement. We compute multipartite entanglement for hypergraph states w…