Abstract
Ghost imaging has become increasingly popular in quantum and optical application fields. Here, we report three-dimensional (3D) optical security using ghost imaging. The series of random phase-only masks are sparsified, which are further converted into particle-like distributions placed in 3D space. We show that either an optical or digital approach can be employed for the encoding. The results illustrate that a larger key space can be generated due to the application of 3D space compared with previous works.
Original language | English |
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Article number | 221106 |
Journal | Applied Physics Letters |
Volume | 103 |
Issue number | 22 |
DOIs | |
Publication status | Published - 25 Nov 2013 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)