Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …

We exhibit an orthogonal set of product states of two three-state particles that nevertheless
cannot be reliably distinguished by a pair of separated observers ignorant of which of the …

No-cloning theorem is fundamental for quantum mechanics and for quantum information
science that states an unknown quantum state cannot be cloned perfectly. However, we can …

A theorem by Shannon and the Holevo theorem impose that the efficiency of any protocol for
quantum key distribution, E, defined as the number of secret (ie, allowing eavesdrop** …

Secure key distribution among two remote parties is impossible when both are classical,
unless some unproven (and arguably unrealistic) computation-complexity assumptions are …

Secure key distribution between two remote parties is impossible when both are classical,
unless some unproven (and arguably unrealistic) computation-complexity assumptions are …

Deterministic Secure Communication Without Using Entanglement Page 1 Chinese Physics
Letters Deterministic Secure Communication Without Using Entanglement To cite this article …

Quantum cryptography allows one to distribute a secret key between two remote parties
using the fundamental principles of quantum mechanics. The well-known established …

We consider quantum devices for turning a finite number N of d-level quantum systems in
the same unknown pure state σ into M> N systems of the same kind, in an approximation of …

Recently Boyer [Phys. Rev. Lett. 99, 140501 (2007)] suggested the idea of semiquantum key
distribution (SQKD) in which Bob is classical and they also proposed a semiquantum key …