Digital spiral-slit for bi-photon imaging. (21st March 2017)

• Record Type: Journal Article
• Authors: McLaren, Melanie; Forbes, Andrew
• Is Part Of: Journal of optics. Volume 19:Number 4(2017:Apr.)
• Publication Date: 2017-03-21
• Subjects: quantum imaging -- orbital angular momentum -- digital holography; 03.65.Ud -- 42.50.Tx -- 42.40.Jv; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/aa5e6b
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: Quantum ghost imaging using entangled photon pairs has become a popular field of investigation, highlighting the quantum correlation between the photon pairs. We introduce a technique using spatial light modulators encoded with digital holograms to recover both the amplitude and the phase of the digital object. Down-converted photon pairs are entangled in the orbital angular momentum basis, and are commonly measured using spiral phase holograms. Consequently, by encoding a spiral ring-slit hologram into the idler arm, and varying it radially we can simultaneously recover the phase and amplitude of the object in question. We demonstrate that a good correlation between the encoded field function and the reconstructed images exists.