# Ultralow-power single-pass all-optical photon router

## TL;DR

This paper presents a new method for routing single photons using atom trapping and nanofiber confinement, enabling control of photon direction with femtojoule-level light.

## Contribution

It introduces a novel all-optical photon routing technique combining atom trapping and nanofiber confinement for ultralow power operation.

## Key findings

- Achieved photon routing with femtojoule-level control energy.
- Demonstrated directional control of single photons via optical nanofiber.
- Validated the effectiveness of the combined trapping and confinement approach.

## Abstract

We demonstrate a novel approach for routing guided single photons by combining atom trapping and transverse light confinement with an optical nanofiber. The direction of photon propagation, either reflection or transmission, is controlled by a femtojoule-level beam.