Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …

Coherent preparation by laser light of quantum states of atoms and molecules can lead to
quantum interference in the amplitudes of optical transitions. In this way the optical …

Quantum networks provide opportunities and challenges across a range of intellectual and
technical frontiers, including quantum computation, communication and metrology. The …

Quantum communication holds promise for absolutely secure transmission of secret
messages and the faithful transfer of unknown quantum states. Photonic channels appear to …

A plasmonic “molecule” consisting of a radiative element coupled with a subradiant (dark)
element is theoretically investigated. The plasmonic molecule shows electromagnetic …

The distribution of quantum states over long distances is limited by photon loss.
Straightforward amplification as in classical telecommunications is not an option in quantum …

Electromagnetically induced transparency is a quantum interference effect observed in
atoms and molecules, in which the optical response of an atomic medium is controlled by an …

Quantum memory is essential for the development of many devices in quantum information
processing, including a synchronization tool that matches various processes within a …

A protocol for quantum secure direct communication using blocks of Einstein-Podolsky-
Rosen (EPR) pairs is proposed. A set of ordered N EPR pairs is used as a data block for …

We describe a technique for manipulating quantum information stored in collective states of
mesoscopic ensembles. Quantum processing is accomplished by optical excitation into …