Related Experiment Video
Updated: Aug 16, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
Coupled Mach-Zehnder interferometer memory element
Martin T Hill1, H J S Dorren, X J M Leijtens
1Inter-University Research Institute on Communication Technology Basic Research and Applications, Department of Electrical Engineering, EH 12.33, Eindhoven University of Technology, RO. Box 513, 5600 MB Eindhoven, The Netherlands. m.t.hill@tue.nl
Abstract:
Two active Mach-Zehnder interferometers are integrated in a monolithic InP/InGaAsP photonic integrated circuit. Together they form a crucial component for optical signal processing: an optical memory element or set-reset flip-flop. The switching time for this initial device is approximately 200 ps. The photonic integrated circuit contains active and passive optical components, including electro-optic phase shifters.

