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Updated: Apr 10, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Efficient bidirectional quantum frequency conversion between telecom and visible bands using adaptively phase-matched

Jierui Hu^1,2, Hao Yuan^1,2, Joshua Akin^1,2

¹Holonyak Micro and Nanotechnology Laboratory and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.

Nature Communications

|April 8, 2026

Summary

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Researchers achieved efficient quantum frequency conversion (QFC) between telecom and visible light using novel nanophotonic waveguides. This breakthrough advances scalable quantum networks by enabling high-performance, low-noise signal conversion.

Area of Science:

Quantum optics
Nanophotonics
Integrated photonics

Background:

Quantum frequency conversion (QFC) is crucial for quantum communication and networking.
Current QFC methods face challenges in efficiency, noise, pump power, bandwidth, and pump-wavelength flexibility.

Purpose of the Study:

To demonstrate efficient, low-noise, and bidirectional QFC between telecom (1550-nm) and visible (780-nm) bands.
To achieve QFC without a long-wavelength pump using unpoled nanophotonic waveguides.

Main Methods:

Utilized unpoled indium gallium phosphide (InGaP) nonlinear nanophotonic waveguides.
Employed adaptive phase-matching control to optimize nonlinear susceptibility.
Demonstrated bidirectional QFC between 1550-nm and 780-nm wavelength bands.

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Last Updated: Apr 10, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Main Results:

Achieved 27% (55%) internal efficiency in 6-mm (2.5-mm) waveguides with low pump power (20 mW / 50 mW).
Observed a low noise flux spectral density of 10^-4 counts/s/Hz at 20 nm detuning.
Successfully eliminated the need for a long-wavelength pump.

Conclusions:

This work presents a significant advancement in integrated nonlinear photonics for high-performance QFC.
The demonstrated InGaP waveguides facilitate the development of versatile and scalable quantum networks.
The method offers a pathway to overcome existing limitations in quantum frequency conversion.