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One of the main options of quantum error-free computing is confusing behavior.

Confusing behavior, One of the main options for error-free quantum computing, is forcing physicists to rethink the "triple spin" superconductivity. A new study, led by Rice University in the United States, forces physicists to look at superconductivity in Uranium Ditelluride, a material on the list (A-list) of global competition for durable quantum computers. It's a mistake to reconsider.

Uranium dithloride crystals are believed to host a rare form of "spin-triplet" superconductivity, but the results of this confusing experiment were published this week in Nature. (Nature) has been published, changing the main explanation of how the state of matter is formed in this compound. National High Magnetic Field Laboratory at Florida State University Showed clear signs of antiphromagnetic spin fluctuations associated with superconductivity in uranium dithloride. Regular ferromagnetism occurs. Competition to find triple spin materials has increased dramatically in recent years because of their potential to host elusive particle particles called Majorana fermions that can be used to build faultless quantum computers.

BingMag.com <b>One</b> of the <b>main</b> <b>options</b> of <b>quantum</b> <b>error-free</b> <b>computing</b> is <b>confusing</b> behavior.

Authors of a new article on the quantum behavior of uranium dithloride; From left: Pengcheng Dai, Chanro Duan, Kimiao C
Credit: Jeff Fitlow/Rice University

Superconductivity occurs when electrons form pairs, spinning like pairs on a dance floor. Units move. Electrons naturally escape from each other due to the same electric charge, but their tendency to avoid other electrons can be overcome by their innate tendency to be present at lower energy levels. If pairing allows electrons to reach a lower energy state, something that is only possible at very cold temperatures, they can be paired.

This effect Fluctuations occur in their physical environment. In conventional superconductors, such as lead, oscillations are essentially vibrations in the atomic lattice of lead atoms inside a superconducting wire. Physicists have not yet been able to detect fluctuations that cause abnormal superconductivity in materials such as uranium dithloride. But decades of study have found phase transitions (key moments in which electrons rearrange themselves spontaneously) at critical points where electron pairing begins.

In equations quantum mechanics, these spontaneous regular sequences are represented by the expression parameter sequence. The name triple spin refers to the spontaneous failure of three symmetries in these regular arrangements. For example, electrons spin continuously like small rod magnets. A parameter is the order of their axis of rotation (for example, the magnetic north pole), which points up or down.

They are oriented and, on the other hand, the antiphromagnetic arrangement is when they oscillate up and down in a top-down arrangement. In the only approved triple spin, superfluid helium-3 has no sequence parameter of less than 18 components. No, or triple spin superconductivity is caused by antipromagnetic spin oscillations that physicists did not previously imagine. Decades of empirical evidence point to the second possibility, but it seems to violate conventional knowledge about superconductivity. So Dai collaborated with Qimiao Si, a theoretical physicist at Rice University and an expert on emerging quantum phenomena. IBM says its new quantum processor Classic supercomputers are more powerful

One of the study's authors has spent the past five years demonstrating the multi-orbital coupling theory developed in collaboration with Emilian Nica. has done. This theory explains the contradictory experimental findings in several unconventional types of superconductors, including heavy fermions, a class that contains uranium dithloride. . C thought uranium had the potential to contribute electrons coupled from each of the seven orbitals to 14 possible states.

"Multivarials were the first thing that came to my mind," he said. If you only have One band or One orbit, these results are not possible, but the existence of orbitals gives a new dimension to the pair of unconventional superconductors. They are like a color palette. Colors are internal quantum numbers, and the f-electrons in uranium-based heavy fermion materials are naturally tuned to have these colors. They lead to new possibilities that go beyond the periodic table of mating states. One of these new possibilities is triple spin. C and Nika, now at Arizona State University, have shown that antipromagnetic correlations can lead to low-energy triple spin pairing modes. According to C, "triple spin coupling modes are in most cases very impossible, because the pairs become single spins to reduce their energy. In uranium dithloride, spin-orbit coupling can alter energy levels in a way that increases the likelihood of triple spin-coupling states forming against single-spin counterparts.

  • Came out alive

Cover photo: Graphic design of neutron scattering experiment and collision of this subatomic particle with a sample of a superconducting uranium diethloride
Credit: Jill Hemman/ORNL


Source: SciTechDaily

Tags: one, main, options, quantum, error-free, computing, confusing, behavior.

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