Cryptography based on the absorption/emission features of multicolor semiconductor nanocrystal quantum dots

作     者：Zhou, M Chang, SD Grover, CP 

作者机构：Natl Res Council Canada Inst Natl Measurement Stand Ottawa ON K1A 0R6 Canada 

出 版 物：《OPTICS EXPRESS》 (Opt. Express)

年 卷 期：2004年第12卷第13期

页      面：2925-2931页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：.codes semiconductor nanocrystals optical coding multiple single-color cryptograms 

摘      要：Further to the optical coding based on fluorescent semiconductor quantum dots (QDs), a concept of using mixtures of multiple single-color QDs for creating highly secret cryptograms based on their absorption/emission properties was demonstrated. The key to readout of the optical codes is a group of excitation lights with the predetermined wavelengths programmed in a secret manner. The cryptograms can be printed on the surfaces of different objects such as valuable documents for security purposes. (C) 2004 Optical Society of America.