Researchers from the University of Pisa and the Italian Institute of Technology (IIT) recently used the SYK model to study the charging protocol for quantum batteries. Their paper, published in PhysicalReview Letters, provides evidence for the potential of quantum mechanical resources to facilitate the battery charging process.
The two researchers Davide Rossini and GianMarcello Andolina who conducted this study told reporters: "Previous theoretical studies have shown that entanglement can greatly speed up the charging process of quantum batteries. However, so far, there is no specific solid-state model that shows such fast charging. "
Rossini, Andolina and their colleagues realized that the SYK model is a good candidate for studying the rapid charging process of quantum batteries because it can generate highly entangled dynamics. The multi-body real-time dynamics of this model are ultimately complex enough to exceed standard analysis methods.
"For our purposes, we found it convenient to adopt a numerical processing method based on the precise diagonalization of giant matrices." Rossini and Andolina explained. They performed extensive numerical simulations on high-performance computing clusters, requiring up to 100Gb of memory and approximately two weeks of computing time.
The model used by the researchers is the first to clearly describe the quantum advantage of quantum batteries in terms of charging speed. Although this model is particularly difficult to use in a laboratory environment, the recent work of Rossini, Andolina and their colleagues is the first and important step towards collecting experimental evidence for this quantum advantage.
Rossini and Andorina said: "The battery is a very complex machine. People want to charge quickly. It should be able to store energy for a long time and ultimately provide useful work. Although we have proved that quantum mechanical resources can facilitate the charging process, But it is not yet clear whether they can be used to improve this hypothetical quantum battery for other tasks, so the research on quantum batteries is still in its infancy."
Recent research conducted by Rossini, Andolina and their colleagues provides strong numerical evidence, suggesting the advantages of applying quantum mechanics in batteries, which are achieved by potentially highly entangled quantum dynamics. In the future, it can pave the way for the development of more batteries that can be charged faster.
Rossini said: "An interesting possible addition to our work is to apply the same concept to heat engines. Since the 18th century, people have known that the efficiency of heat engines cannot exceed a limit called the Carnot limit. Universal value. Therefore, quantum mechanics resources obviously cannot be used to improve efficiency. However, there is no universal limitation on power, and we plan to study a heat engine based on SYK to further study this problem."