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.
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Source: Phys.org