Australian scientists have built what they claim is the world’s first fully functioning proof-of-concept quantum battery; a tiny device that charges, stores, and discharges energy using the strange rules of quantum mechanics rather than traditional chemistry.
The breakthrough, published in Light: Science & Applications and announced by CSIRO (Australia’s national science agency), comes from a team led by Dr. James Quach, CSIRO’s quantum science and technologies leader, with collaborators from RMIT University and the University of Melbourne.
The prototype is a multi-layered organic microcavity (essentially a microscopic sandwich of materials that traps light in a specific way) charged wirelessly with a laser and converted into an electrical current.
What makes this quantum battery stand out is its counterintuitive behavior: it charges faster as it gets bigger. In conventional batteries, adding more cells or material increases charging time. Here, the researchers demonstrated that charging time decreases as 1/√N, where N is the number of molecules involved.
If the battery doubles in size, it takes just a little more than half as long to charge; a direct result of quantum collective effects, where the units somehow “know” about each other and charge more efficiently together.
The prototype charges in femtoseconds (quadrillionths of a second) and stores energy for nanoseconds (about six orders of magnitude longer than the charge time) which is still extremely short for practical use but a major step forward from earlier concepts. The device completes a full battery cycle: charge with light, store the energy, and discharge it as current.
Dr. Quach said the work validates the potential of quantum batteries for unprecedented efficient and rapid energy storage. “My ultimate ambition is a future where we can charge electric cars much faster than fuelling petrol cars or charge devices over long distances wirelessly”, he explained.
While the prototype is microscopic and currently lasts only nanoseconds, the team sees this as proof that the exotic quantum charging advantage is real and scalable. Future versions could lead to batteries that charge in moments, last longer, and require less material, potentially revolutionizing electric vehicles, portable electronics, renewable energy storage, and grid-scale systems.
This matters globally because better batteries are key to fighting climate change, reducing reliance on fossil fuels, and making clean energy more accessible. For regions like Africa, where power grids can be unreliable and EV adoption is just beginning, ultra-fast-charging batteries could make electric transport practical even with limited infrastructure.
This research builds on earlier quantum battery concepts from 2013 and prototypes from 2022, but this is the first to demonstrate a complete charge-store-discharge cycle with the size-dependent supercharging effect.
This tiny lab device may seem far from everyday use, but it proves a fundamental quantum principle that could reshape energy storage in the coming decades, charging faster the bigger it gets, and doing so wirelessly. A glimpse of a future where batteries behave nothing like the ones we know today.
