Label-free quantum super-resolution imaging using entangled multi-mode squeezed light

TL;DR

This paper presents a theoretical framework for label-free quantum super-resolution imaging using entangled multi-mode squeezed light, achieving noise reduction and improved resolution beyond classical limits.

Contribution

It introduces a method to generate and optimize multi-mode entangled squeezed light for super-resolution imaging, surpassing classical noise and photon efficiency limits.

Findings

Reduces imaging measurement errors below shot noise level.

Achieves Heisenberg limit in imaging error optimization.

Reduces photon requirements by two orders of magnitude.

Abstract

In this study, we explore the theoretical application of entangled multi-mode squeezed light for label-free optical super-resolution imaging. By generating massively entangled multi-mode squeezed light through an array of balanced beam splitters, using a single-mode squeezed light input, we create a multi-mode quantum light state with exceptional entanglement and noise suppression below the shot noise level. This significantly reduces imaging measurement errors compared to classical coherent state light imaging when the same number of photons are used on the imaging sample. We demonstrate how to optimize the imaging system's parameters to achieve the Heisenberg imaging error limit, taking into account the number of entangled modes and photons used. We also examine the effects of optical losses in the imaging system, necessitating adjustments to the optimized parameters based on the degree of optical loss. In practical applications, this new quantum imaging approach reduces the number of photons needed to achieve the same image quality by two orders of magnitude compared to classical imaging methods that use non-entangled, non-squeezed coherent state light.