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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Complex control of polaritons based on optical Stark potential.

Chuyuan Zheng¹, Kenneth Coker^1,2, Wei Li Zhang¹

¹School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.

The Journal of Chemical Physics

|December 23, 2024

Summary

We developed an all-optical method using the valley-selective optical Stark effect to control exciton-polaritons. This technique enables precise spatiotemporal manipulation of polariton flow for optical computing applications.

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Area of Science:

Quantum optics
Condensed matter physics
Nanophotonics

Background:

Exciton-polaritons are crucial for optical computation.
Controlling their flow is essential for device advancement.
Intra-cavity disorder poses a challenge to polariton manipulation.

Purpose of the Study:

To propose and demonstrate an all-optical method for spatiotemporal control of exciton-polaritons.
To utilize the valley-selective optical Stark effect (OSE) for precise polariton manipulation.
To overcome limitations imposed by intra-cavity disorder.

Main Methods:

Employing the valley-selective optical Stark effect (OSE) for all-optical control.
Utilizing wavefront shaping to induce an in-plane bar-code potential.
Demonstrating polarization-selective concentration of polaritons.
Expanding the bar-code potential into a 2D quick-response code for enhanced encoding.

Main Results:

Achieved spatiotemporal control of polariton flow via OSE.
Demonstrated polarization-selective concentration of polaritons at specific locations.
Overcame intra-cavity disorder effects through induced potentials.
Successfully designed and demonstrated a polariton decoder with enhanced encoding.

Conclusions:

The valley-selective OSE offers an effective all-optical approach for controlling exciton-polaritons.
Wavefront shaping and induced potentials can overcome disorder and enable precise polariton manipulation.
The proposed polariton decoder demonstrates robust binary-to-decimal conversion for advanced optical computing.