Scientists at the University of Nebraska-Lincoln and the University of California, Berkeley are working on a new device that could help them find the global minimum of mathematical formulas. New options for simulations involving quantum materials would be greatly improved by finding that illusive mathematical value.
The Nebraska assistant professor of electrical and computer engineering said that many scientific questions are dependent on being able to find that mathematical value. When the dimensions of the parameters are large, it can be difficult for modern computers to find something.
Researchers were only able to do this with devices that were very low in temperature. The Nebraska- UC Berkeley team has found a way to combine the advantages of light and matter at room temperature.
The exciton-polaritons are quantum half-light and half-matter quasi-particles, which recently emerged as a solid-state analog photonic simulation platform for quantum physics.
Growing solution-grown halide perovskite, a famous material for solar cell communities, is what enabled our breakthrough. The smooth single-crystalline large crystals with great optical homogeneity will be reported at room temperature for the first time.
This research is reported in a paper by Bao.
The president of Hong Kong University, who completed this research as a mechanical engineering faculty member at UC Berkeley, was excited. A lattice with a size up to 1010 can be created with a large number of coherently coupled condensates.
Future studies at room temperature can be done with its material properties. The room temperature system could be used to solve complex problems. There has been a long-sought room-temperature solid-state quantum simulation platform.
The solution synthesis method we reported can enable many interesting studies at room temperature without the need for complicated and expensive equipment and materials. It opens the door for simulation of large calculational approaches and other device applications that were previously not possible at room temperature.
In the highly competitive era of quantum technologies, this process is essential.
One of Nebraska's Grand Challenges is quantum science. The university's expertise in this area made it a research priority.
More information: Renjie Tao et al, Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature, Nature Materials (2022). DOI: 10.1038/s41563-022-01276-4 Journal information: Nature Materials
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