Design of High-Performance Photon Number Resolving Photodetectors Based on Coherently Interacting Nanoscale Elements

TL;DR

This paper proposes a novel design for photon number resolving photodetectors using coherently interacting nanoscale elements, aiming to achieve high fidelity, efficiency, and low noise for advanced quantum applications.

Contribution

The paper introduces a new detector design based on collective interactions of nanoscale elements, surpassing existing limitations in photon number resolution.

Findings

Proposed a nanoscale element-based detector design.

Achieves high efficiency and low noise in photon detection.

Demonstrates potential for high count rates and fidelity.

Abstract

A number of applications in basic science and technology would benefit from high fidelity photon number resolving photodetectors. While some recent experimental progress has been made in this direction, the requirements for true photon number resolution are stringent, and no design currently exists that achieves this goal. Here we employ techniques from fundamental quantum optics to demonstrate that detectors composed of subwavelength elements interacting collectively with the photon field can achieve high-performance photon number resolution. We propose a new design that simultaneously achieves photon number resolution, high efficiency, low jitter, low dark counts, and high count rate. We discuss specific systems that satisfy the design requirements, pointing to the important role of nanoscale device elements.