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Related Experiment Video

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Compact component for integrated quantum optic processing.

Partha Pratim Sahu¹

¹Department of Electronics and communication engg, Tezpur University, Assam, India.

Scientific Reports

|November 21, 2015

Summary

This summary is machine-generated.

Researchers developed a compact two-mode interference (TMI) coupler for integrated quantum optics. This component demonstrates significant quantum interference, achieving a high Hong-Ou-Mandel dip visibility of ~0.963, crucial for advancing quantum circuits.

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Area of Science:

Quantum Optics
Integrated Photonics
Quantum Information Science

Background:

Quantum interference is fundamental for developing integrated quantum optic technologies.
Advancing large-scale integration of quantum optic circuits requires novel compact components.

Purpose of the Study:

To introduce and characterize a two-mode interference (TMI) coupler as an ultra-compact component for integrated quantum optics.
To investigate quantum interference in TMI couplers as a function of coupling length and ratio.

Main Methods:

Fabrication of an ultra-compact two-mode interference (TMI) coupler.
Experimental study of quantum interference by varying coupling length.
Measurement of Hong-Ou-Mandel (HOM) dip visibility and its dependence on coupler parameters.

Main Results:

The TMI coupler was successfully implemented as an ultra-compact component.
A large Hong-Ou-Mandel (HOM) dip with peak visibility of ~0.963 ± 0.009 was observed at the half coupling length.
Complex quantum interference with high fabrication tolerance and quantum visibility was demonstrated.

Conclusions:

The TMI coupler is a promising ultra-compact component for integrated quantum optics.
The demonstrated high quantum visibility and fabrication tolerance are advantageous for scalable quantum circuits.
This work contributes to the advancement of integrated quantum technologies through novel coupler design.