2025/12/10 by Mirzaei-Ghormish, Siavash, Mehrabad, Mahmoud Jalali, Flores, Helaman +2
#FOS: Physical sciences #Quantum Physics (quant-ph)
paper · doi:10.48550/arxiv.2512.10140
Quantum networks require interfaces translating memory photons to telecom wavelengths while controlling spatial modes; tasks performed by separate components today. We present a programmable alternative: a structured pump writes a virtual Bragg grating enabling simultaneous spatio-spectral conversion and real-time controlling of emission. Using a LiNbO3 whispering-gallery resonator, we demonstrate 93% spatial coupling and bidirectional conversion between 736 nm and 1347 nm. This reconfigurable interface eliminates cascaded losses and hardware modifications.