Developing optical quantum memories is one of the most important problems of modern quantum optics and quantum information [1-3].Such devices are supposed to be
Entanglement distillation(ED) allows to establish strong levels of entanglement between remote nodes when it has been degraded by losses and noise.The main enta
We introduce a density matrix decomposition of a multipartite quantum system of a finite dimension into two density matrices:a separable one and an essentially
We develop an ungreedy algorithm for finding a quantum-control procedure to construct a single-shot multi-qubit gates for three nearest-neighbor-coupled multi-l
Specific features of the collision induced photon echo in a gas at the transition 0(=)1 were predicted [1] and became the subject of detailed investigation in o
We identified,probably,the simplest classical system featuring the echo phenomenon – a collection of randomly oriented free rotors with dispersed rotational ve
Propagation of an XUV/X-ray radiation in a medium with the modulated resonant transition is studied.We start with a simple model of the two-level systems with t