Ghost imaging using labyrinth-like phase modulation patterns for high-efficiency and high-security optical encryption
Department of Electrical and Computer Engineering, National University of Singapore - 4 Engineering Drive 3, Singapore 117583, Singapore
Received: 19 December 2014
Accepted: 22 December 2014
Ghost imaging has attracted more and more current attention due to its marked physical characteristics, and many physical applications, such as sensing and optical security, have been explored. In this letter, we propose ghost imaging using labyrinth-like phase modulation patterns for optical encryption. Since only one phase-only mask should be pre-set and the labyrinth patterns occupy only few spaces, high-efficiency storage or transmission of system keys can be implemented. In addition, each labyrinth pattern (i.e., phase modulation pattern) possesses high randomness and flexibility, hence high security can be guaranteed for the proposed optical encryption.
PACS: 42.30.-d – Imaging and optical processing / 42.50.Ar – Photon statistics and coherence theory / 42.50.Ex – Optical implementations of quantum information processing and transfer
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