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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT

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Image authentication with exclusive-OR operated optical vortices.

Rahul Kumar, Praveen Kumar, Naveen K Nishchal

Journal of the Optical Society of America. A, Optics, Image Science, and Vision

|January 31, 2025

Summary

This summary is machine-generated.

This study demonstrates a secure authentication system using arrays of optical vortices for high-dimensional encoding. The method employs exclusive-OR logic and liquid crystal spatial light modulators for robust verification.

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Area of Science:

Optics and Photonics
Information Security
Quantum Information

Background:

Optical vortices possess orbital angular momentum, enabling high-dimensional data encoding.
Existing authentication methods can be vulnerable to sophisticated attacks.
Advanced optical techniques offer potential for enhanced security solutions.

Purpose of the Study:

To develop a novel authentication verification system using optical vortices.
To implement an exclusive-OR logic operation for secure authentication.
To demonstrate a secure and straightforward authentication method.

Main Methods:

Generating arrays of optical vortices with specific orbital angular momentum states.
Utilizing a liquid crystal spatial light modulator (LC-SLM) to create orthogonal vortex states.
Implementing an exclusive-OR (XOR) logic gate with light beams carrying vortex arrays.

Main Results:

Successful demonstration of an authentication system based on optical vortex arrays.
Simulation and experimental validation of the proposed XOR logic-based authentication scheme.
Achieved secure authentication with a high-dimensional encoding capacity.

Conclusions:

The proposed optical vortex-based authentication system offers a secure and easily implementable solution.
High-dimensional encoding capability of optical vortices enhances security.
This technique presents a promising advancement in optical security and verification systems.