Scientists designed a 'quantum battery' by copying the way bacteria soak up sunlight.
arXiv · March 17, 2026 · 2603.15268
The Takeaway
By mimicking the architecture of light-harvesting bacteria, this battery uses quantum 'subradiant' states to store energy without leaking. It proves that nature has already evolved the perfect blueprints for high-efficiency quantum energy storage, which could lead to batteries that never lose their charge when idle.
From the abstract
We propose a theoretical model of a fully functional nonreciprocal quantum battery inspired by the architecture of bacterial light-harvesting complexes. We assign functional roles to collective quantum optical subradiant and superradiant states and introduce a unimodal cavity to assist storage. The transition rates are obtained from an effective non-Hermitian Hamiltonian, tailored to the battery geometry which are fed into a master equation to unravel the time evolution. We investigate the compl