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Q: Fachverband Quantenoptik und Photonik

Q 54: Posters: Quantum Optics and Photonics IV

Q 54.52: Poster

Donnerstag, 12. März 2020, 16:30–18:30, Empore Lichthof

Time-domain wavefront shaping for secure communication — •Matthias C. Velsink and Pepijn W.H. Pinkse — MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands

Recently, we applied wavefront shaping techniques to implement quantum-secure readout of a physical unclonable key for authentication [1] and communication [2]. Unfortunately, spatial wavefront shaping is unsuitable for long-distance use. We therefore propose to use wavefront shaping in the time domain using a single spatial mode. We show spatiotemporal control of a pulse through a complex medium. Furthermore, we investigate a secure communication method based on physical unclonable functions in the time domain. We will report on the progress.

Reference

• 0em [1] S.A. Goorden et al., Quantum-secure authentication of a physical unclonable key, Optica 1, 421-424 (2014).
• [2] R. Uppu et al., Asymmetric cryptography with physical unclonable keys, Quantum Sci. Technol. 4, 045011 (2019).