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Related Experiment Video

Updated: Apr 30, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Efficient single-mode photon-coupling device utilizing a nanofiber tip.

Sho Chonan¹, Shinya Kato¹, Takao Aoki¹

¹Department of Applied Physics, Waseda University, Okubo 3-4-1, Shinjuku, Tokyo, Japan.

Scientific Reports

|April 25, 2014

Summary

This summary is machine-generated.

Efficiently coupling single photons from quantum emitters to optical fibers is key for quantum technologies. This study demonstrates a simple silica nanofiber device achieving up to 87% coupling efficiency for quantum information science applications.

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Last Updated: Apr 30, 2026

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Published on: February 25, 2017

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Area of Science:

Quantum Optics
Quantum Information Science
Nanophotonics

Background:

Single-photon sources are vital for quantum optics and quantum information science.
Efficiently coupling photons from quantum emitters to optical fibers remains a significant challenge.
Existing photonic devices often face difficulties in direct fiber coupling.

Purpose of the Study:

To develop a simple and highly efficient method for coupling single photons to optical fibers.
To investigate the use of nanostructured silica for enhanced photon coupling.
To explore strategies for maximizing photon coupling efficiency from quantum emitters.

Main Methods:

Utilizing the flat tip of a silica nanofiber to couple photons from a quantum emitter.
Incorporating a metallic mirror to enhance photon collection efficiency.
Employing a silicon waveguide integrated with the nanofiber for further efficiency gains.

Main Results:

Achieved direct coupling of up to 38% of photons from an emitter to a single-mode optical fiber.
Increased coupling efficiency to 76% with the addition of a metallic mirror.
Further enhanced efficiency to 87% using a silicon waveguide.

Conclusions:

A simple silica nanofiber device enables highly efficient single-photon coupling to optical fibers.
The demonstrated method is versatile and applicable to various quantum emitters.
This approach offers a promising solution for advancing quantum information technologies.