Time travel is often a way to change history in science fiction such as "Back to the Future" and "Looper." Now researchers suggest a certain kind of time machine could also possess another powerful ...

May 14 (UPI) --The makers of Coors Light beer unveiled a new service for the coronavirus era: A "Clone Machine" to allow video conference attendees to leave their cameras without being missed. The ...

Scientists in China have produced a theory for a quantum cloning machine able to produce several copies of the state of a particle at atomic or sub-atomic scale, or quantum state. The advance could ...

We present an optimal asymmetric 1 → 4 quantum cloner. Our derivation generalizes the constructions of optimal asymmetric 1 → 2 and 1 → 3 quantum cloners in [Quantum Inf. Comput 5, 583 (2005)]. We ...