Quantum system virtually cooled to half of its actual temperature
(PHYSorg.com Physics)

Physicists have developed a quantum simulation method that can `virtually cool` an experimental quantum system to a fraction of its actual temperature. The method could potentially allow access to extremely low-temperature phenomena, such as unusual forms of superconductivity, that have never been observed before. The simulation involves preparing multiple copies of the system`s quantum state, interfering the states, and making measurements on each copy, which ultimately yields a simulated measurement on the same system at a lower temperature.