Author

Qian Zhang

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Preprint Sep 2026

Optical Mode Sorting with a Programmable Diffractive Neural Network

Programmable diffractive optical processors are particularly attractive for spatial light manipulation because their optical transformations can be dynamically reconfigured and adapted without modifying the physical hardware. However, their practical performance is often limited by the gap between simulation and experi...

Qian Zhang, Shi-Yue Chen, Juergen W. Czarske · 0 citations

Preprint Jul 2026

Space-division multiplexed quantum key distribution exploiting multi-plane light conversion for few-mode fibers

As quantum key distribution (QKD) progresses from laboratory demonstrations toward practical deployment, quantum communi- cation networks increasingly require higher key rates and the ability to distribute independent secret keys among multiple users and network nodes. In this paper we present a promsing approach with...

Qian Zhang, Stefan Krause, Felix Kunzmann et al. · 1 citation