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 …

All our former experience with application of quantum theory seems to say that what is
predicted by quantum formalism must occur in the laboratory. But the essence of quantum …

This is a preliminary version of a book in progress on the theory of quantum communication.
We adopt an information-theoretic perspective throughout and give a comprehensive …

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 …

This paper establishes several converse bounds on the private transmission capabilities of a
quantum channel. The main conceptual development builds firmly on the notion of a private …

One of the major achievements of the recently emerged quantum information theory is the
introduction and thorough investigation of the notion of a quantum channel which is a basic …

In this paper, we develop a formalism for distilling a classical key from a quantum state in a
systematic way, expanding on our previous work on a secure key from bound entanglement …

Given many independent and identically-distributed (iid) copies of a quantum system
described either by the state ρ or σ (called null and alternative hypotheses, respectively) …

This paper establishes a general theory of energy-constrained quantum and private
capacities of quantum channels. We begin by defining various energy-constrained …

This paper defines the amortized entanglement of a quantum channel as the largest
difference in entanglement between the output and the input of the channel, where …