Random Organic Nanolaser Arrays for Cryptographic Primitives

• DOI: 10.1002/adma.201807880
• Publication Date: 2019-07-22T09:31:39Z
• Authors: Jiangang Feng; Wen Wen; Xiao Wei; Xiangyu Jiang; Moyuan Cao; Xuedong Wang; Xiqi Zhang; Lei Jiang; Yuchen Wu
• Keywords: Nanolaser

Next-generation high-security cryptography and communication call for nondeterministic generation efficient authentication of unclonable bit sequences. Physical functions using inherent randomness in material device fabrication process have emerged as promising candidates realizing one-way cryptographic systems that avoid duplication attacks. However, previous approaches suffer from the tradeoffs between low-efficiency complicated authentication. Here, all-photonic primitives by solution printing organic nanolaser arrays with size-dependent dual lasing emission are reported. The stochastic distribution into discrete capillary bridges, triggered high-rate solvent evaporation, on a periodic topographical template yields single crystals regulated position, alignment, random size, which ensures high entropy. Stimulated different vibrational sublevels intrinsic self-absorption effect permit dual-wavelength at wavelengths 660 and/or 720 nm, can be efficiently encoded quaternary keys reliability. High entropy, solution-processed programming facilitate their implementation secure throughput, efficiency, low cost.