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 …

In principle, quantum key distribution (QKD) offers information-theoretic security based on
the laws of physics. In practice, however, the imperfections of realistic devices might …

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

Quantum key distribution (QKD) using weak coherent states and homodyne detection is a
promising candidate for practical quantum‐cryptographic implementations due to its …

We review the theory of continuous-variable entanglement with special emphasis on
foundational aspects, conceptual structures and mathematical methods. Much attention is …

A fully general approach to the security analysis of continuous-variable quantum key
distribution (CV-QKD) is presented. Provided that the quantum channel is estimated via the …

Quantum secure direct communication (QSDC) is a unique technique, which supports the
secure transmission of confidential information directly through a quantum channel without …

The continuous-variable version of quantum key distribution (QKD) offers the advantages
(over discrete-variable systems) of higher secret key rates in metropolitan areas, as well as …

We analyze the asymptotic security of the family of Gaussian modulated quantum key
distribution protocols for continuous-variables systems. We prove that the Gaussian unitary …