Dancing with the spins

Paweł is a PhD student in our team. He performs aggressive simulations in MuMax. I don’t know details of this program yet, but I have the impression that it is possible to calculate the whole world in it. At least that is how you can conclude from the results that Paweł publishes.

I could not fully understand what the source of this success was. Is it a matter of hard work and talent for processing large numbers? It seemed to me too easy. And I was right. Several weeks ago I discovered what really stands behind this.

I have long been afraid to publicize these facts. This is a very controversial move, but I feel that the world must also know what lies beneath science. What do physicists do in their offices? Scientific discoveries and the process of knowledge creation look very nice on paper, but how is it? It turns out that totally different.

On October 20th, 2016, while sitting in the office of the Department of Physics, I got my third coffee and went to the neighboring room where Paweł and Justyna worked. Knocking on the door I opened and I was surprised when I found them both at the entrance to the vacilala con vuelta.

For a long time I could not understand what was going on. Also Paweł and Justyna were not prepared for such a situation. Losing their steps and knitting their hands, they did something like adios por arriba and sat down on chairs. Only the next day Paweł explained to me what was going on. They just played electronic spins.

Recently I wrote how the electrons were treated all the way through the 20th century. We hope that these times will finally pass. We try to move from the era of brutal charge into the epoch of graceful dancing with spins. Electrons will not commit themselves to mourning the transmission of important information through these wires inside the computer. They will do it with elegance, using their spin to synchronous dance. Our words, sounds and images will be recorded in their steps.

More about Paweł's antenna you can read HERE

The first element is to teach the electrons how to do it correctly. Electron spins dance on their own, but it's more like a Saturday night's fun in the country than the serious dance we're talking about. Usually, they should be brought up to order with a magnetic field. Once they are standing, you can start dictating their tempo by rhythmically changing the external field. Spin dance starts.

We can tell all spins to step at the same time, or to do it with adequate delay in subsequent places like the Mexican wave at the stadium. And it would be best if they could be controlled so that only a selected part of them danced and the rest rested. Why bother the whole company.

This is exactly what Paweł designed. With the help of a special antenna we give rhythm to a short order of spins, and these invite to dance other spins. But not those standing on the sides, but those standing in line. Such a beam like from a laser. The rest need not do anything, it saves energy.

Paweł claims that this was an experiment by analogy. Rather unsuccessful, because it is difficult to simulate a beam in a two-spin system. Even our whole group could not be enough for such a simulation.

Of course Paweł's methods have been discussed in the faculty for a month. We got a new room to fill. Professor Krawczyk thinks that Rueda de Casino needs a better floor.