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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Optical coherence encryption with structured random light
Deming Peng1, Zhaofeng Huang1, Yonglei Liu2
1School of Physical Science and Technology, Soochow University, Suzhou, 215006 China.
Photonix
|November 29, 2021
Summary
This study introduces a novel optical encryption method using light
Area of Science:
- Optics
- Information Security
- Quantum Optics
Background:
- Optical encryption is crucial for secure data transmission.
- Existing methods rely on first-order light field properties, leading to instability.
- Environmental factors like atmospheric turbulence degrade system performance.
Purpose of the Study:
- To develop a more secure and robust optical encryption protocol.
- To encode information into the second-order spatial coherence of light.
- To overcome limitations of first-order optical encryption methods.
Main Methods:
- Utilizing a generalized van Cittert-Zernike theorem.
- Encoding information into the second-order spatial coherence distribution.
- Employing a fractional Fourier transform for experimental validation.
Main Results:
- Demonstrated a novel coherence-based optical encryption protocol.
- Enhanced security through complex coherence measurements.
- Achieved robustness against environmental noise and turbulence.
Conclusions:
- The proposed method offers superior security and stability compared to conventional techniques.
- Coherence-based optical encryption is a promising approach for complex environments.
- This research opens new avenues for secure optical information processing.
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