The theory of entanglement provides a fundamentally new language for describing
interactions and correlations in many-body systems. Its vocabulary consists of qubits and …

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 …

Bell's 1964 theorem, which states that the predictions of quantum theory cannot be
accounted for by any local theory, represents one of the most profound developments in the …

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

From the bestselling author of the acclaimed Chaos and Genius comes a thoughtful and
provocative exploration of the big ideas of the modern era: Information, communication, and …

Quantum cryptography promises levels of security that are impossible to attain in a classical
world. Can this security be guaranteed to classical users of a quantum protocol, who may …

Coupling a quantum many-body system to an external environment dramatically changes its
dynamics and offers novel possibilities not found in closed systems. Of special interest are …

We quantify how well matrix product states approximate exact ground states of one-
dimensional quantum spin systems as a function of the number of spins and the entropy of …

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

We consider multipartite states of qubits and prove that their bipartite quantum
entanglement, as quantified by the concurrence, satisfies a monogamy inequality …