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 …

Thirty years after it was first proposed, quantum teleportation remains one of the most
important protocols in quantum information and quantum technologies, enabling the …

The science of quantum information has arisen over the last two decades centered on the
manipulation of individual quanta of information, known as quantum bits or qubits. Quantum …

Quantum information is a rapidly advancing area of interdisciplinary research. It may lead to
real-world applications for communication and computation unavailable without the …

Quantum teleportation is one of the most important protocols in quantum information. By
exploiting the physical resource of entanglement, quantum teleportation serves as a key …

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

Precise quantum control and measurement of several harmonic oscillators, such as the
modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use …

A few decades ago, quantum optics stood out as a new domain of physics by exhibiting
states of light with no classical equivalent. The first investigations concerned single photons …

We present a continuous-variable (CV) Gaussian analog of cluster states, a new class of CV
multipartite entangled states that can be generated from squeezing and quantum …

We derive necessary conditions in terms of the variances of position and momentum linear
combinations for all kinds of separability of a multiparty multimode continuous-variable state …