Single-pixel computational ghost imaging with helicity-dependent metasurface hologram

Hong-Chao Liu, Biao Yang, Qinghua Guo, Jinhui Shi, Chunying Guan, Guoxing Zheng, Holger Mühlenbernd, Guixin Li, Thomas Zentgraf, Shuang Zhang

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)
98 Downloads (Pure)

Abstract

Different optical imaging techniques are based on different characteristics of light. By controlling the abrupt phase discontinuities with different polarized incident light, a metasurface can host a phase-only and helicity-dependent hologram. In contrast, ghost imaging (GI) is an indirect imaging modality to retrieve the object information from the correlation of the light intensity fluctuations. We report single-pixel computational GI with a high-efficiency reflective metasurface in both simulations and experiments. Playing a fascinating role in switching the GI target with different polarized light, the metasurface hologram generates helicity-dependent reconstructed ghost images and successfully introduces an additional security lock in a proposed optical encryption scheme based on the GI. The robustness of our encryption scheme is further verified with the vulnerability test. Building the first bridge between the metasurface hologram and the GI, our work paves the way to integrate their applications in the fields of optical communications, imaging technology, and security.

Original languageEnglish
Article numbere1701477
JournalScience Advances
Volume3
Issue number9
DOIs
Publication statusPublished - 8 Sep 2017

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