Generating photons from vacuum with counter rotating wave interaction

TL;DR

This paper introduces a bang-bang control method combined with a pruning greedy algorithm to significantly boost photon generation from vacuum via counter-rotating wave interactions.

Contribution

It presents a novel control scheme and algorithm that greatly enhance photon production efficiency compared to traditional continuous activation methods.

Findings

Photon number increases by several orders of magnitude with the proposed method.

The pruning greedy algorithm effectively identifies optimal control sequences.

The approach outperforms continuous activation in photon generation efficiency.

Abstract

We propose a bang-bang control scheme to enhance photon generation from the vacuum via the counter-rotating wave (CRW) interaction, and develop a pruning greedy algorithm (PGA) to identify the optimal control sequence. Our numerical results demonstrate that the maximum number of photons generated within a given evolution time is increased by several orders of magnitude compared with that achieved by continuous activation of the CRW interaction.