Scientists, including researchers from the University of Tokyo, have made a breakthrough in quantum phenomena that could improve the efficiency of quantum batteries. This discovery brings the technology one step closer to practical use in devices with limited rechargeable options.
While quantum technologies are often associated with developments in quantum computers, quantum batteries have untapped potential in the field of stable energy solutions and potential integration into future electric cars.
Currently, quantum batteries only exist in laboratory conditions. However, a graduate student named Yuano Chen and Associate Professor Yoshikhiko Khasegava from the University of Tokyo are focused on finding the most effective way to charge these batteries. The key to their efficiency lies in the charging method.
In their experiments, the researchers used an experimental device as a quantum battery, which showed promising charging characteristics that could potentially improve smartphone batteries. Unlike conventional chemical batteries that use lithium, quantum batteries utilize arrays of microscopic particles such as atoms.
In collaboration with Gaoyan Zhu and Professor Pan Sue from the Beijing Center for Cummithing Science Studies, the team experimented with different charging methods using optical devices like lasers, lenses, and mirrors.
In the classical world, charging a battery with multiple chargers can only be done sequentially, limiting the available options to two possible orders. However, the researchers discovered a new quantum effect called ICO (indefinite causal order) that allows quantum batteries to be charged in a non-traditional manner. This means that multiple chargers can be arranged in different orders simultaneously, forming a quantum superposition.
This discovery enables more energy-efficient charging of batteries, requiring significantly less power. The ICO technique not only has potential applications in charging low-energy devices, but also in various tasks related to thermodynamics and heat transfer, such as solar panels.