Coherent perfect nanoabsorbers based on negative refraction

TL;DR

This paper introduces coherent perfect nanoabsorbers (CPNAs) utilizing negative refraction slabs to focus divergent beams at nanoscale, enabling advanced applications in optical nanodevices and quantum computation readouts.

Contribution

It presents a novel concept of CPNAs based on negative refraction and small losses, combining analytical and numerical methods to demonstrate their potential.

Findings

CPNAs can focus divergent beams at nanoscale.

The concept leverages negative refraction properties.

Potential applications include quantum computation readouts.

Abstract

Based on both analytical dipole model analyses and numerical simulations, we propose a concept of coherent perfect nanoabsorbers (CPNAs) for divergent beams. This concept makes use of the properties of a slab with negative refraction and small losses. The proposed CPNA device would allow focusing radiation in nanoscale regions, and hence could be applied in optical nanodevices for such diverse purposes as reading the results of quantum computation which is based on single photon qubits.