Year: 2024
Type: article
Abstract: Photon blockade in weak nonlinear regime is an exciting and promising subject that has been extensively studied in the steady state. However, how to achieve dynamic blockade in a single bosonic mode with weak nonlinearity using only pulsed driving field remains unexplored. Here, we propose to optimize the parameters of the pulsed driving field to achieve dynamic blockade in a single bosonic mode with weak nonlinearity via the particle swarm optimization (PSO) algorithm. We demonstrate that both Gaussian and rectangular pulses can be used to generate dynamic blockade in a single bosonic mode with weak nonlinearity. Based on the Fourier series expansions of the pulsed driving field, we identify that there are many paths for two-photon excitation in the bosonic mode, even only driven by pulsed field, and the dynamic blockade in a weak nonlinear regime is induced by the destructive interference between them. Our paper not only highlights the effectiveness of PSO algorithm in optimizing dynamical blockade but also opens a probable way to optimize the parameters for other quantum effects, such as quantum entanglement and quantum squeezing.
Source: Physical Review A
Authors: Guang-Yu Zhang, Zhi-Hao Liu, Xun-Wei Xu
Institution: Hunan Normal University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4401638105