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Random bit generation based on a self-chaotic microlaser with enhanced chaotic bandwidth.

Jian-Cheng Li1,2, Jin-Long Xiao1,2, Yue-De Yang1,2

  • 1State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.

Nanophotonics (Berlin, Germany)
|December 5, 2024
PubMed
Summary
This summary is machine-generated.

We developed a self-chaotic microlaser for high-speed random bit generation. This laser achieves 500 Gb/s random bit generation, enhancing security for classical and quantum cryptography systems.

Keywords:
chaotic bandwidth enhancementmicrocavity laserrandom bit generationself-chaos

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Area of Science:

  • Optics and Photonics
  • Nonlinear Dynamics
  • Quantum Cryptography

Background:

  • Chaotic semiconductor lasers are crucial for high-speed random bit generation.
  • Applications include generating cryptographic keys for classical and quantum systems.

Purpose of the Study:

  • To propose and demonstrate a self-chaotic microlaser with enhanced chaotic bandwidth.
  • To achieve high-speed random bit generation using this microlaser.

Main Methods:

  • Designed a deformed square microcavity laser for tri-mode interaction.
  • Utilized two-mode internal interaction for self-chaotic behavior.
  • Introduced a third mode to enhance chaotic bandwidth via photon-photon resonance.

Main Results:

  • Achieved a self-chaotic microlaser with enhanced chaotic standard bandwidth.
  • Demonstrated 500 Gb/s random bit generation.
  • Verified randomness using the NIST SP 800-22 statistics test.

Conclusions:

  • The developed microlaser enables high-speed random bit generation.
  • This technology has potential applications in secure communication, chaos radar, and optical reservoir computing.
  • Provides a platform for studying multimode nonlinear laser dynamics.