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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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All-photon logic gate calculation based on phase change materials.

Jiapeng Sun^1,2, Jinhua Mou^1,2, Jiaxing Gao^1,2

¹Harbin Engineering University, Harbin 150001, China.

Nanophotonics (Berlin, Germany)

|November 7, 2025

Summary

This summary is machine-generated.

This study introduces a novel all-photonic non-volatile fiber device using Ge2Sb2Te5 (GST) for advanced photonic networks. The device offers ten-level data storage and enables logical gate functions, overcoming limitations of current optical modulators.

Keywords:

logic gate computation multi-level memory non-volatile phase change material

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Area of Science:

Photonics
Materials Science
Optical Communications

Background:

Contemporary photonic information networks require efficient information modulation.
Existing optical modulators face challenges including complexity, cost, insertion loss, and crosstalk.

Purpose of the Study:

To propose a novel all-photonic non-volatile fiber device to address limitations of current optical modulators.
To demonstrate ten-level data storage and logical gate functions using the proposed device.

Main Methods:

Development of an all-photonic non-volatile fiber device integrating a dual peanut-shaped microstructure with Ge2Sb2Te5 (GST).
Manipulation of GST state via external laser modulation for data storage.
Configuration of the device in series and parallel to implement logical gate functions.

Main Results:

The all-photonic modulator exhibits non-volatility, a 21 dB contrast ratio, and 0.2 dB repeatability.
Demonstrated ten-level data storage with repeatable or random access.
Successful implementation of "AND" and "OR" logical gate functions.

Conclusions:

The novel GST-based all-photonic fiber device offers a promising solution for advanced photonic information networks.
The device's non-volatility, high performance, and logical gate capabilities present significant potential for information network control.