Broadband amplitude squeezing in electrically driven quantum dot lasers

TL;DR

This paper demonstrates that electrically driven quantum dot lasers can generate broadband amplitude-squeezed states of light at room temperature across 3 to 12 GHz, supported by experimental and simulation data.

Contribution

It introduces the use of quantum dot lasers for broadband amplitude squeezing at room temperature, a novel approach compared to traditional optical nonlinear methods.

Findings

Broadband amplitude squeezing achieved from 3 to 12 GHz.

Experimental results align with stochastic simulations.

Room temperature operation of quantum dot laser squeezing.

Abstract

The generation of broadband squeezed states of light lies at the heart of high-speed continuous-variable quantum information. Traditionally, optical nonlinear interactions have been employed to produce quadrature-squeezed states. However, the harnessing of electrically pumped semiconductor lasers offers distinctive paradigms to achieve enhanced squeezing performance. We present evidence that quantum dot lasers enable the realization of broadband amplitude-squeezed states at room temperature across a wide frequency range, spanning from 3 GHz to 12 GHz. Our findings are corroborated by a comprehensive stochastic simulation in agreement with the experimental data.