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This work introduces a Quantum True Random Number Generator (QTRNG) using photon-trapping Avalanche Photodiodes (APDs) to produce high-entropy random numbers from quantum uncertainty. The photon-trapping surface textures (PTST) introduce fabrication-induced randomness, making the system physically unclonable. PTST also alters photon penetration depth, modifying impact ionization and enhancing quantum randomness. The design is statistically validated against NIST standards, ensuring low bias and high throughput. The QTRNG provides a scalable, compact, and cryptographically secure solution for next-generation hardware, advancing quantum-secure communications and unclonable cryptographic systems.
Presenter
Univ. of California, Davis (United States)
Dr. Ahasan Ahamed is a postdoctoral scholar in the University of California, Davis. He completed his doctoral studies in electrical and computer engineering from the University of California, Davis in 2025 focusing on reconstructive spectrometers using silicon photodiodes. He completed his M.Sc. degree from UC Davis in Electrical and Computer Engineering and his B.Sc. degree from Bangladesh University of Engineering and Technology (BUET) in Electrical and Electronics Engineering. His current research interests include optoelectronic sensors, silicon photonics, hyperspectral imaging, hardware security and photonic true random number generators. He received prestigious Smita Bakshi teaching award and Graduate Student Leadership award for his contribution to the academic and social community. He is actively participating outreach activities to promote STEM education through CITRIS-INSPIRE and GREAT program.