Investigation on Ultra-Low Voltage Quantum Well Optical Modulator for Optical Interconnection for Superconducting Integrated Circuits

We propose an ultra-low voltage modulator for optical interconnection in a superconducting Josephson-CMOS hybrid system. By using an InGaAs/InAlAs quantum well microring resonator-enhanced Mach-Zehnder modulator, an operating voltage as low as 0.6 mV is expected with the modulation speed of over 10 GHz at cryogenic temperature.