Exceeding the maximum classical energy density in fully charged quantum batteries

TL;DR

This paper demonstrates that quantum energy teleportation protocols can surpass classical energy density limits in quantum batteries, enabling more efficient and instantaneous energy storage and transfer using entanglement and LOCC.

Contribution

It introduces a novel protocol of Quantum Energy Teleportation that exceeds classical energy density limits in quantum batteries, enhancing efficiency and reducing complexity.

Findings

Quantum Energy Teleportation surpasses classical energy density limits.

Protocol enables instantaneous energy charging via LOCC.

Significant improvements in quantum energy storage systems.

Abstract

Quantum batteries are anticipated to achieve significant advancements in energy storage capacity. In classical batteries, the energy density at each subsystem reaches its maximum value, denoted as $E_C$, which is determined by dividing the maximum energy by the number of subsystems. We demonstrate that this limit can be surpassed in quantum batteries by protocols of Quantum Energy Teleportaion (QET), allowing for the energy density at a subsystem to exceed the value of $E_C$. Our protocol offers enhanced efficiency, reduces experimental complexity on quantum computers, and enables instantaneous energy charging through Local Operations and Classical Communication (LOCC). Leveraging quantum entanglement, this protocol significantly improves quantum energy storage systems, promising advances in quantum computing and new technological applications. This work represents a crucial step towards revolutionizing quantum energy storage and transfer.