Optically injected nanolasers for time-delay signature suppression and communications

Area of Science:

• Nonlinear dynamics
• Quantum optics
• Secure communications

Background:

• Nanolasers exhibit complex nonlinear dynamics.
• Optimizing chaotic output for secure communication remains a challenge.
• Time-delay signatures (TDS) can compromise chaos-based security.

Purpose of the Study:

• To optimize chaotic output from nanolasers for secure communication.
• To develop a chaos secure communication scheme using TDS-suppressed nanolaser chaos.
• To analyze the robustness of the proposed scheme against parameter variations.

Main Methods:

• Utilizing an optically injected nanolaser structure to generate broadband chaos.
• Implementing a two-channel transmission technique for enhanced security.
• Investigating the influence of key parameters on TDS suppression and chaos synchronization.

Main Results:

• Achieved broadband chaos generation with suppressed time-delay signatures (TDS).
• Demonstrated enhanced security in message encryption and decryption via TDS suppression.
• Showcased robustness to parameter mismatch and fabrication imperfections under proper injection.

Conclusions:

• The proposed nanolaser-based scheme effectively suppresses TDS for secure communications.
• The scheme offers robust performance against parameter variations and fabrication imperfections.
• Nanolaser chaos provides a promising platform for advanced secure communication systems.