3.7k citations · 10.3k across the 83 of their papers we have counts for
5 papers · 1 filter
Nonlinear entanglement witnesses, covariance matrices and the geometry of separable states
Otfried Gühne, Norbert Lütkenhaus
Entanglement witnesses provide a standard tool for the analysis of entanglement in experiments. We investigate possible nonlinear entanglement witnesses from several perspectives.…
Security of coherent state quantum cryptography in the presence of Gaussian noise
Matthias Heid, Norbert Lütkenhaus
We investigate the security against collective attacks of a continuous variable quantum key distribution scheme in the asymptotic key limit for a realistic setting. The quantum cha…
Unconditional security of the Bennett 1992 quantum key-distribution scheme with strong reference pulse
Kiyoshi Tamaki, Norbert Lütkenhaus, Masato Koashi +1
We prove the unconditional security of the original Bennett 1992 protocol with strong reference pulse. We show that we may place a projection onto suitably defined qubit spaces bef…
One-way quantum key distribution: Simple upper bound on the secret key rate
Tobias Moroder, Marcos Curty, Norbert Lütkenhaus
We present a simple method to obtain an upper bound on the achievable secret key rate in quantum key distribution (QKD) protocols that use only unidirectional classical communicati…
Quantum Cryptography
Miloslav Dusek, Norbert Lutkenhaus, Martin Hendrych
Elementary review article on quantum cryptography.