Title: Two-photon charging of a quantum battery with a Gaussian pulse envelope Show Chinese title

Title: 双光子充电量子电池的高斯脉冲包络

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. Show Chinese abstract

Abstract: 量子能量科学正在迅速成为人们关注的领域，涉及在量子层面生成、传递和存储能量。 特别是，量子电池有可能利用量子力学的奇迹，以提高其性能，相较于其电化学对应物。 在这里，我们展示了如何通过双光子充电协议，使量子电池实现存储能量的指数级增强。 我们理论上考虑了一个量子电池模型，该模型被建模为一个量子谐振子，当由二次场驱动（表现为高斯脉冲包络）时，会引发电池的量子压缩。 这种量子压缩确保了电池的粒子数指数级地向上推动其玻色子能级。 我们的结果展示了在由连续变量定义的量子物体中快速存储大量能量的可行机制，这可能在多种量子光学平台中进行实验探索。