Ask a Question

Prefer a chat interface with context about you and your work?

Foiling zero-error attacks against coherent-one-way quantum key distribution

Foiling zero-error attacks against coherent-one-way quantum key distribution

To protect practical quantum key distribution (QKD) against photon-number-splitting attacks, one could measure the coherence of the received signals. One prominent example that follows this approach is coherent-one-way (COW) QKD, which is commercially available. Surprisingly, however, it has been shown very recently that its secret key rate scales quadratically with …