Two-photon charging of a quantum battery with a Gaussian pulse envelope

TL;DR

This paper proposes a two-photon charging protocol for quantum batteries modeled as harmonic oscillators, demonstrating exponential energy enhancement via Gaussian pulse-driven squeezing, with potential experimental applications in quantum optics.

Contribution

It introduces a novel two-photon charging method that exponentially increases energy storage in quantum harmonic oscillator batteries using Gaussian pulse-induced squeezing.

Findings

Exponential energy enhancement achieved through two-photon charging.

Quantum squeezing drives the battery's population up its energy ladder.

Potential for experimental realization in quantum optical systems.

Abstract

Quantum energy science is rapidly emerging as a domain interested in the generation, transfer and storage of energy at the quantum level. In particular, quantum batteries have the scope to exploit the wonders of quantum mechanics in order to boost their performance as compared to their electrochemical equivalents. Here we show how an exponential enhancement in stored energy can be achieved with a quantum battery thanks to a two-photon charging protocol. We consider theoretically a quantum battery modelled as a quantum harmonic oscillator, which when driven by a quadratic field (manifested by a Gaussian pulse envelope) gives rise to squeezing of the battery. This quantum squeezing ensures that the population of the battery is driven exponentially up its bosonic energy ladder. Our results demonstrate a plausible mechanism for quickly storing a vast amount of energy in a quantum object defined by continuous variables, which may be explored experimentally in a variety of quantum optical platforms.