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Optomagnetic plasmonic nanocircuits.

Zahraa Al-Baiaty^1,2,3, Benjamin P Cumming², Xiaosong Gan¹

¹Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology Hawthorn Victoria 3122 Australia zalbaiaty16@gmail.com.

Nanoscale Advances

|September 22, 2022

Summary

This summary is machine-generated.

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Researchers developed optomagnetic plasmonic nanocircuitry to improve quantum information processing. This method enhances plasmon propagation and coupling efficiency for nitrogen vacancy centers, enabling scalable quantum networks.

Area of Science:

Quantum Information Science
Nanophotonics
Solid-State Physics

Background:

Integrated quantum circuits require efficient coupling between quantum emitters and nanoplasmonic waveguides.
Scalable, low-loss fabrication methods are crucial for practical quantum information processing, communication, and sensing.
Nitrogen vacancy (NV) centers in nanodiamonds are promising solid-state quantum emitters.

Purpose of the Study:

To demonstrate optomagnetic plasmonic nanocircuitry for guiding, routing, and processing electron spin readouts from NV centers.
To optimize plasmonic circuitry for enhanced efficiency and compactness in quantum applications.
To enable the design of more complex nanoplasmonic circuits for quantum information processing.

Main Methods:

Utilizing (3-mercaptopropyl)trimethoxysilane (MPTMS) to enhance plasmon propagation length.

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Implementing a grating coupler to improve coupling efficiency between NV centers and plasmonic waveguides.

Developing optomagnetic techniques for spin readout and manipulation.

Main Results:

Achieved a 5-fold enhancement in plasmon propagation length using MPTMS.
Demonstrated a 5.2-fold improvement in coupling efficiency with the grating coupler.
Successfully guided, routed, and processed electron spin readouts from NV centers using the developed nanocircuitry.

Conclusions:

The developed optomagnetic plasmonic nanocircuitry offers a feasible and scalable method for integrated quantum technologies.
Enhanced plasmon propagation and coupling efficiency are key to designing advanced nanoplasmonic circuits for quantum information processing.
Integration with NV centers provides a robust platform for on-chip quantum information networks and extended nanodiamond applications.