Our group explores the interface between quantum communication theory and quantum optical implementations:
- we translate between abstract protocols (described by qubits) and physical implementations (described for example by laser pulses)
- we benchmark implementations to properly characterize quantum advantage
- we exploit quantum mechanical structures for use in quantum communication
Currently we are focusing on tight and complete security proofs for practical quantum key distribution (QKD) that do fit to actual implementations. We are involved in activities that support standardization and certification of QKD. We train researchers in the international community through QKD Summer Schools and also through our open source software framework openQKDSecurity.
We also work towards practical quantum repeater architectures that allow to overcome issue of transmission losses that plague quantum communication protocols.
Norbert Lütkenhaus research group members
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