Quantum cryptography Page 1 Quantum cryptography Nicolas Gisin, Grégoire Ribordy,
Wolfgang Tittel, and Hugo Zbinden Group of Applied Physics, University of Geneva, 1211 …

Quantum key distribution (QKD) is the first quantum information task to reach the level of
mature technology, already fit for commercialization. It aims at the creation of a secret key …

Quantum cryptography exploits principles of quantum physics for the secure processing of
information. A prominent example is secure communication, ie, the task of transmitting …

Quantum key distribution is widely thought to offer unconditional security in communication
between two users. Unfortunately, a widely accepted proof of its security in the presence of …

Quantum Information Theory is an area of physics which studies both fundamental and
applied issues in quantum mechanics from an information-theoretical viewpoint. The …

Basic techniques to prove the unconditional security of quantum crypto graphy are
described. They are applied to a quantum key distribution protocol proposed by Bennett and …

Abstract “Device-independent” not only represents a relaxation of the security assumptions
about the internal working of the quantum devices, but also can enhance the security of the …

We present a technique for proving the security of quantum-key-distribution (QKD) protocols.
It is based on direct information-theoretic arguments and thus also applies if no equivalent …

Abstract We consider the Bennett-Brassard cryptographic scheme, which uses two
conjugate quantum bases. An eavesdropper who attempts to obtain information on qubits …

Quantum key distribution (QKD) permits information-theoretically secure transmission of
digital encryption keys, assuming that the behavior of the devices employed for the key …