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Schottky Barrier Diode

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Related Experiment Video

Updated: Dec 25, 2025

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

Pass-block architecture for distributed-phase-reference quantum key distribution using silicon photonics.

Jincheng Dai, Lei Zhang, Xin Fu

|April 3, 2020

Summary

This summary is machine-generated.

We developed a silicon photonics transmitter for quantum key distribution (QKD) to secure data against quantum computing threats. This high-speed QKD system achieved significant secret key rates over a 20 km fiber link.

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Last Updated: Dec 25, 2025

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

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Area of Science:

Quantum Information Science
Photonics Engineering
Cybersecurity

Background:

Secure information transmission is critical for government and individuals.
Large-scale quantum computing poses increasing threats to current encryption methods.
Quantum key distribution (QKD) offers security based on quantum mechanics principles.

Purpose of the Study:

To propose and experimentally demonstrate a silicon photonics transmitter for high-speed distributed-phase-reference QKD.
To integrate QKD into telecommunications networks using silicon photonics.

Main Methods:

Development of a silicon photonics transmitter with a pass-block architecture.
Experimental demonstration using a demodulation chip for high-speed QKD.
Emulation of a 20 km fiber link for performance testing.

Main Results:

Estimated asymptotic secret key rate of 792 kbps for the coherent-one-way protocol.
Estimated asymptotic secret key rate of 940 kbps for the differential-phase-shift protocol.
Successful demonstration of high-speed QKD performance over an emulated fiber link.

Conclusions:

The proposed silicon photonics transmitter enables high-speed QKD.
This technology offers enhanced flexibility for integrating QKD into future telecommunication networks.
The findings address the growing need for quantum-resistant secure communication.