Laser cooling !!!

[johnson22]

Laser cooling is a technique used by the cooling of atoms.

In the preparation of a Bose-Einstein condensate (BEC) used laser cooling in the first phase of cooling, to give a thermal breakdown is given at a temperature of about 150 μKelvin (150 kelvins = -123.15 degrees Celsius). For further cooling of the thermal atoms, which BECet formed, applied technology, evaporative cooling.


Theory

"By laser cooling to cool thermal cloud by irradiating laser light in a so-called magneto optical trap. The laser frequency must be slightly less than the resonant frequency of the atoms, as the thermal atoms consists of, since it only wants to curb the fastest of atoms in the thermal cloud.

By using laser light with a frequency that is slightly smaller than "rest" resonant frequency of the atoms, achieved just that some of the fastest-atom interact with laser light. It is only nuclear, moving with a very specific timetables, which will interact with laser light, since energy difference between two energy transitions in the atoms must correspond to the frequency of the laser. Due to Doppler effect, it will only be the fastest atoms in laser frequency is slightly less than for those atoms at rest.

When one of the atoms excites a radiation, the quantum while the momentum, to the atom, the atom achieves a momentum change in the opposite direction of its movement direction. Then the atom will decay by spontaneous emission of radiation emissions with the same frequency as the absorbed rays. The impulse, as the atom is affected by the decay, that is the same as when the atom absorbed quanta, as photo energy is conserved. But as the likelihood that radiation broadcast in a certain direction by spontaneous emission is equal in every direction, the atom in the average will not be affected by any pulse in a certain direction. Pulse change in a particular direction by spontaneous emission is equal to 0.

[Trio]

There are 150 micro-kelvin, it is not -123.15 degrees Celsius. It is very close -273.15 degrees Celsius, or 0 degrees Kelvin. The theoretical absolute zero point. So there is a small error in the text.

It is not something which can be used for cooling in the computer. It is only a very small point which is so cold.

[Jackson2]

To the time when it would be useful we would talk enough on organic super computers

[deveritt]

The only problem is that it costs too much power to be used in computers.

[Techno01]

As far as I can see, so it is about to cool an incredibly small amount of atoms, which are maintained in a magnetic field. It does not sound as anything, ever (ever) will be used for everyday purposes.

[Techguru01]

It is certainly possible, also for the entire computer.

But there are things about it...
In fact, it has very little hardware which likes to work in the-165C, in addition, if you must strike the right button 0 kelvins, so the power consumption is also low. As far as I recall NASA's super-cooled rooms used more power than the whole of Copenhagen's total consumption