Premium
Random Organic Nanolaser Arrays for Cryptographic Primitives
Author(s) -
Feng Jiangang,
Wen Wen,
Wei Xiao,
Jiang Xiangyu,
Cao Moyuan,
Wang Xuedong,
Zhang Xiqi,
Jiang Lei,
Wu Yuchen
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201807880
Subject(s) - cryptographic primitive , cryptography , materials science , randomness , computer science , nanolaser , nanodevice , photonics , authentication (law) , lasing threshold , nanotechnology , optoelectronics , cryptographic protocol , wavelength , algorithm , mathematics , statistics , computer security
Abstract Next‐generation high‐security cryptography and communication call for nondeterministic generation and efficient authentication of unclonable bit sequences. Physical unclonable functions using inherent randomness in material and device fabrication process have emerged as promising candidates for realizing one‐way cryptographic systems that avoid duplication and attacks. However, previous approaches suffer from the tradeoffs between low‐efficiency fabrication and complicated authentication. Here, all‐photonic cryptographic primitives by solution printing of organic nanolaser arrays with size‐dependent dual lasing emission are reported. The stochastic distribution of organic solution into discrete capillary bridges, triggered by high‐rate solvent evaporation, on a periodic topographical template yields organic single crystals with regulated position, alignment, and random size, which ensures high entropy. Stimulated emission from different vibrational sublevels and the intrinsic self‐absorption effect permit size‐dependent dual‐wavelength lasing emission at wavelengths of 660 and/or 720 nm, which can be efficiently encoded into quaternary cryptographic keys with high reliability. High entropy, solution‐processed programming and all‐photonic authentication of random organic nanolaser arrays facilitate their cryptographic implementation in secure communication with high throughput, efficiency, and low cost.