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 …

In information processing, as in physics, our classical world view provides an incomplete
approximation to an underlying quantum reality. Quantum effects like interference and …

We provide necessary and sufficient conditions for separability of mixed states of n-particle
systems. The conditions are formulated in terms of maps which are positive on product …

Quantum information theory is a branch of science at the frontier of physics, mathematics,
and information science, and offers a variety of solutions that are impossible using classical …

Consider three qubits A, B, and C which may be entangled with each other. We show that
there is a trade-off between A's entanglement with B and its entanglement with C. This …

We prove for any pure three-quantum-bit state the existence of local bases which allow one
to build a set of five orthogonal product states in terms of which the state can be written in a …

We show that one single-mode squeezed state distributed among N parties using linear
optics suffices to produce a truly N-partite entangled state for any nonzero squeezing and …

Ho** to simplify the classification of pure entangled states of multi (m)− partite quantum
systems, we study exactly and asymptotically (in n) reversible transformations among n th …

We discuss quantum correlations in systems of indistinguishable particles in relation to
entanglement in composite quantum systems consisting of well separated subsystems. Our …

The theory of quantum information, that is, of the transmission, storage, and processing of
information using quantum-mechanical systems, is now well developed. It has been …