The group of scientists described the technology of remote control of the entropy of specific qubits, which actually locally violates the second law of thermodynamics in the system. The device can be used to cool the quantum computers, the creation of nano-rolls or heaters.
One of the main laws of physics states that non-order, an energetically isolated system cannot spontaneously decrease. However, researchers from the Moscow Institute of Physics and Technology with colleagues from the United States and Switzerland presented a device to manipulate this state by changing it on demand. To be accurate, they described the spatial-separated quantum daemon Maxwell, operating at a distance of up to 5 meters.
As a qubit, scientists used a tiny superconducting device consisting of thin layers of aluminum on a silicon chip. The system is called an artificial atom because under conditions of ultra-low temperature, it behaves as an elementary particle with two energy levels. Once related, quits begin to exchange virtual photons, which leads to a change in their condition.
The second device (demon) given into the pure state transmits it to the first, and becomes «dirty» itself. At the same time, the working cube reduces its entropy, keeping the former energy. In essence, the second device «eats» disorders.
As an example, the billiard balls can be brought, which after hitting the kiem fly out in all directions. The described technology causes all the balls to return to its original state, actually turning the time to reverse.
Since the cubes are in a purest state only the fraction of a second, then manipulations can be carried out repeatedly. In practice, this can be used to develop algorithmic cooling
You can also create a microscopic refrigerator that does not affect the entire volume, but to specific points. Since the process can be launched in the opposite direction, it is possible not only cooling, but also heating.
When working with two cubes, the effect was reached in 85% of cases, and with the addition of the third, only 50% were successful. However, scientists plan to reduce the error frequency by improving the equipment used.
Recently, physicists have developed no less amazing device —