Cost-Efficient Deterministic Engineering of Single Photon Emitters in Two-Dimensional Materials

Area of Science:

• Materials Science
• Quantum Optics
• Nanotechnology

Background:

• Two-dimensional (2D) materials are promising for quantum light emission due to tunable bandgaps and strong carrier confinement.
• Existing methods for creating single-photon emitters in 2D materials include strain, defect, and surface functionalization engineering.

Purpose of the Study:

• To present a practical, cost-efficient, and deterministic method for strain engineering single-photon emitters in 2D materials.
• To utilize optically active microparticles for localized strain induction without interfering with the host material's optical properties.

Main Methods:

• Deterministic strain engineering of thin gallium selenide (GaSe) flakes using bipyramidal microparticles.
• Optical characterization to confirm the generation of single-photon emitters and assess strain effects.
• Comparison of results with existing strain engineering techniques for 2D materials.

Main Results:

• Successful implementation of a cost-efficient methodology for creating single-photon emitters in GaSe.
• Demonstrated strong agreement with previous studies on strain-induced emitters in multilayer GaSe.
• The bipyramidal microparticle method provides a non-interfering optical approach for strain induction.

Conclusions:

• The proposed technique offers an accessible and low-cost platform for deterministic strain engineering of single-photon sources in 2D materials.
• This method can significantly advance research in nanophotonics and quantum light technologies utilizing layered semiconductors.
• The approach facilitates broader laboratory implementation, accelerating the understanding and application of 2D quantum emitters.