Bacteria Teach Quantum Batteries to Store Light ⚡ экспресс
A theoretical model of a non-reciprocal quantum battery is proposed, with architecture inspired by bacterial light-harvesting complexes. Collective quantum-optical subradiant and superradiant states serve functional roles, and a single-mode cavity aids energy accumulation. Transition rates are derived from an effective non-Hermitian Hamiltonian adapted to the system’s geometry and used in the master equation for time evolution analysis. All aspects of thermodynamic work are studied: accumulation, leaks, ergotropy, work extraction, fluxes, and power. Optimization is found for different ring structure sizes, each peaking at a distinct energy function. Strong coupling between the ring and the central system improves storage capacity but reduces output power. Ergotropy exceeds nominal capacity and grows linearly with size, but the regime of optimal small systems vanishes under strong coupling.
The quantum battery works like a sponge that absorbs light but won't release it without a forced squeeze. The inspiration came from bacteria's natural solar traps: capturing solar photons, they transfer energy almost losslessly, as proven by spectroscopy. Physicists recreated this principle by assembling atoms into a ring and placing them in a mirrored cavity. The collective behavior of the atoms created a one-way valve effect: energy easily enters, but the way back is blocked. This achieves entropic irreversibility — a concept developed by Ludwig Boltzmann.
This effect arises from quantum connections between the atoms. Regular batteries lose energy with each charge, but the quantum version promises near-perfect efficiency. The size of the ring affects performance: small rings deliver power faster, while large ones store more. With weak coupling to the cavity, output increases, but strong coupling turns the battery into a simple buffer.
Bacteria mastered this trick billions of years ago, transferring light with efficiency close to 100%. Now engineers dream of creating gadgets that charge in an instant and hold their charge forever.
🎯 Bacterial light traps transfer energy with 100% efficiency, without losses or heating — still an unattained dream of energy technology.