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Quantum cloning
Valerio Scarani, Sofyan Iblisdir, Nicolas Gisin +1
The impossibility of perfectly copying (or cloning) an arbitrary quantum state is one of the basic rules governing the physics of quantum systems. The processes that perform the op…
Fast and simple one-way Quantum Key Distribution
Damien Stucki, Nicolas Brunner, Nicolas Gisin +2
We present and demonstrate a new protocol for practical quantum cryptography, tailored for an implementation with weak coherent pulses to obtain a high key generation rate. The key…
Security of two quantum cryptography protocols using the same four qubit states
Cyril Branciard, Nicolas Gisin, Barbara Kraus +1
The first quantum cryptography protocol, proposed by Bennett and Brassard in 1984 (BB84), has been widely studied in the last years. This protocol uses four states (more precisely,…