Researchers from the University of Nebraska-Lincoln and the University of California, Berkeley, have developed a new photonics device that could bring scientists closer to the “holy grail” of finding a global minimum. of mathematical formulas at room temperature. The search for elusive mathematical value will be a major advance in opening up new options for simulations involving quantum material.
Wei Bao, Nebraska assistant professor of electrical and computer engineering
Wei Bao, Nebraska assistant professor of electrical and computer engineering, says many scientific questions rely heavily on finding that mathematical value. Findings can be difficult even for modern computers, especially when the size of the parameters – commonly used in quantum physics – is extremely large.
The researchers were only able to do this with polariton-optimized devices at extremely low temperatures, near minus 270 degrees Celsius. Bao said Nebraska-UC The Berkeley team “found a way to combine the advantages of light and matter at room temperature that’s right for this amazing optimization challenge.”
These devices use quantum half-light and half-matter known as exciton-polarizers, which have recently emerged as a platform for simulating solid-state analog photons for quantum physics such as condensation Bose-Einstein complexes and condensers XY rotation model.
“Our breakthrough was made by taking solution-grown perovskite halide, a well-known material for the solar cell community, and developing it in nanotechnology,” says Bao. “This will produce exceptionally fine large single crystals with excellent optical uniformity, which have not been reported before at room temperature for a polariton system.”
Bao is the corresponding author of a this research reportpublished in Nature Materials.
“This is exciting,” said Bao collaborator Xiang Zhang, who is now president of the University of Hong Kong but completed the research as a faculty member in the mechanical engineering department at the University of Hong Kong. UC Berkeley. “We show that XY The spin lattice with a large number of tightly bound condensates can be constructed as a lattice with dimensions up to 10 × 10.”
Its material properties may also enable future studies at room temperature rather than extreme cold. “We are just beginning to explore the potential of a room temperature system to solve complex problems,” says Bao. Our work is a concrete step towards the long-sought room-temperature solid-state quantum simulation platform.
“The solution synthesis method we reported with excellent thickness control for large superhomogeneous perovskite halide halides could allow for many interesting studies at room temperature without the need for equipment. and complicated and expensive materials, Bao added. It also allows simulation of large computational methods and many other instrumentation applications, previously inaccessible at room temperature.
This process is essential in the highly competitive age of quantum technology, which is expected to transform the fields of information processing, sensing, communication, imaging and more.
Nebraska has prioritized quantum science and engineering as one of the Big challenges. It was named a research priority because of the university’s expertise in the field and the impact Husker research could have on the exciting and promising field.
Source: University of Nebraska-Lincoln
