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Numerical evidence for bound secrecy from two-way post-processing in quantum key distribution
Sumeet Khatri, Norbert Lütkenhaus
Bound secret information is classical information that contains secrecy but from which secrecy cannot be extracted. The existence of bound secrecy has been conjectured but is curre…
Simulating single photons with realistic photon sources
Xiao Yuan, Zhen Zhang, Norbert Lutkenhaus +1
Quantum information processing provides remarkable advantages over its classical counterpart. Quantum optical systems are proved to be sufficient for realizing general quantum task…
Entanglement verification with detection-efficiency mismatch
Yanbao Zhang, Norbert Lutkenhaus
The security analysis of quantum key distribution is difficult to perform when there is efficiency mismatch between various threshold detectors involved in an experimental setup. E…
Role of syndrome information on a one-way quantum repeater using teleportation-based error correction
Ryo Namiki, Liang Jiang, Jungsang Kim +1
We investigate a quantum repeater scheme for quantum key distribution based on the work by Muralidharan et al., Phys. Rev. Lett. 112, 250501 (2014). Our scheme extends that work by…
Practical Quantum Retrieval Games
Juan Miguel Arrazola, Markos Karasamanis, Norbert Lütkenhaus
Complex cryptographic protocols are often constructed from simpler building-blocks. In order to advance quantum cryptography, it is important to study practical building-blocks tha…