19 citations · 50 across the 5 of their papers we have counts for
6 papers
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…
Quantum key distribution with trusted quantum relay
H. Bechmann-Pasquinucci, A. Pasquinucci
A trusted quantum relay is introduced to enable quantum key distribution links to form the basic legs in a quantum key distribution network. The idea is based on the well-known int…
Robustness of a quantum key distribution with two and three mutually unbiased bases
Filippo Caruso, Helle Bechmann-Pasquinucci, Chiara Macchiavello
We study the robustness of various protocols for quantum key distribution. We first consider the case of qutrits and study quantum protocols that employ two and three mutually unbi…
Impossibility of perfect quantum sealing of classical information
H. Bechmann-Pasquinucci, G. M. D'Ariano, C. Macchiavello
Sealing information means making it publicly available, but with the possibility of knowing if it has been read. Commenting on [1], we will show that perfect quantum sealing is not…
Quantum Seals
H. Bechmann-Pasquinucci
A quantum seal is a way of encoding a classical message into quantum states, so that everybody can read the message error-free, but at the same time the sender and all intended rea…
Bell inequality for quNits with binary measurements
H. Bechmann-Pasquinucci, N. Gisin
We present a generalized Bell inequality for two entangled quNits. On one quNit the choice is between two standard von Neumann measurements, whereas for the other quNit there are $…