201 citations · 620 across the 14 of their papers we have counts for
4 papers · 2 filters
Reduced randomness in quantum cryptography with sequences of qubits encoded in the same basis
L. -P. Lamoureux, H. Bechmann-Pasquinucci, N. J. Cerf +2
We consider the cloning of sequences of qubits prepared in the states used in the BB84 or 6-state quantum cryptography protocol, and show that the single-qubit fidelity is unaffect…
Highly asymmetric quantum cloning in arbitrary dimension
Jaromir Fiurasek, Radim Filip, Nicolas J. Cerf
We investigate the universal asymmetric cloning of states in a Hilbert space of arbitrary dimension. We derive the class of optimal and fully asymmetric 1->3 cloners, which produce…
Cloning quantum entanglement in arbitrary dimensions
E. Karpov, P. Navez, N. J. Cerf
We have found a quantum cloning machine that optimally duplicates the entanglement of a pair of -dimensional quantum systems. It maximizes the entanglement of formation containe…
Quantum entanglement enhances the capacity of bosonic channels with memory
Nicolas J. Cerf, Julien Clavareau, Chiara Macchiavello +1
The bosonic quantum channels have recently attracted a growing interest, motivated by the hope that they open a tractable approach to the generally hard problem of evaluating quant…