The first Quantum Key Distribution (QKD) protocol has been proposed by Bennett and Brassard in 1984. Since then, the security of QKD has always been the central issue in the quantum cryptographic field. Trace distance
Initialization of composite quantum systems into highly entangled states is usually a must to enable their use for quantum technologies. However, unavoidable noise in the preparation stage makes the system state mixed, hindering this goal.
A team of Italian and Chinese researchers propose a method that uses entangled photons as radar probes. The quantum radar methods so far proposed could determine the distance to an object more precisely than classical
Researchers at Delft University of Technology have developed a spintronic sensor that is only 11 atoms in size. The sensor is capable of capturing spin magnetic waves and consists of an antenna, a readout capability,