Researchers at the Pritzker School of Molecular Engineering (PME) of the University of Chicago have discovered a new material MnBi. 6Type 10, can be used to create quantum highways where electrons can move. These electronic channels may be useful in connecting the internal components of the powerful, energy-efficient quantum computer .
New material MnBi is expected to be used in quantum computing
When electrons pass through traditional metal wires, they lose a small amount of energy (such as heat), and some of their inherent properties will change. Therefore, these wires cannot be used to connect parts of quantum computers that encode data with the quantum characteristics of electrons.
In this new work published in the journal Nano Express , researchers detailed how MnBi acts as a "magnetic topological insulator" to shuttle electrons around it while maintaining the electron's energy and quantum properties. The discovery of a material such as
has the potential to open up quantum highways and allow electrons to move without dissipation, which is an important milestone in topological quantum computer engineering.
Quantum connection
Quantum computer stores data in Quantum bits, and qubits are the basic information unit that displays quantum properties including superposition. Meanwhile, researchers are working to develop devices that connect these qubits – sometimes in the form of single electrons – and they also need new materials that can transmit information stored in these qubits.
Theoretical physicist proposes that electrons can be transmitted between topological qubits by forcing electrons to flow in one-dimensional conductive channels at the edge of the material. Previously, it was not feasible for most applications to try this.
special materials are expected to work in more practical temperatures.
Assistant Professor Yang Shuolong, who led the study, and his team began studying MnBi6T10, using manganese to introduce magnetization into semiconductors formed by bismuth and tellurium. Although electrons flow randomly inside most semiconductors, the magnetic field in MnBi forces all electrons to form a single file line outside the material.
PME researchers obtained MnBi6Type10, which was made by collaborators of the Penn State 2D Crystal Alliance led by Mao Zhiqiang (indeed). The team then used a combination of two methods—angularly resolved light emission spectroscopy and transmission electron microscopy (TEM)—to study how electrons in MnBi are accurate. 6Two 10 Behavior and how the motion of electrons changes with magnetic state. The TEM experiment was conducted in collaboration with the Nasim Alem Laboratory of Penn State University.
"defects" required by
When they probed the 6-spec 10 properties of MnBi, the research team encountered some difficulties at the beginning: some materials seem to be well used as magnetic topological insulators, while others cannot.
Yang further explained: Some of them have the required electronic properties, while others do not. Interestingly, it is difficult to distinguish the differences in their structures. When we do structural measurements such as X-ray diffraction, we see the same thing, which is a mysterious phenomenon.
However, through their TEM experiments, they found that all fragments of MnBi 6-t10 This work has some commonality: the defect is the loss of manganese scattered throughout the material. Further experiments show that in fact, these defects are necessary to drive the magnetic state and allow electrons to flow.
A very high value for this work is to figure out for the first time how to adjust these defects to achieve quantum characteristics.
researchers are now looking for a new way to plant MnBi 6T 10 crystals in the lab, as well as exploring what happens to ultra-thin two-dimensional versions of the material.
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