arXiv:1804.04482
Phase diffusion quantum entropy source on a silicon chip
Miquel Rudé, Carlos Abellán, Albert Capdevila, David Doménech, Morgan W. Mitchell, Waldimar Amaya, Valerio Pruneri
Abstract
We report an accelerated laser phase diffusion quantum entropy source with all non-laser optical and optoelectronic elements implemented in silicon photonics. The device uses efficient and robust single-laser accelerated phase diffusion methods, and implements the whole quantum entropy source scheme including an unbalanced Mach-Zehnder interferometer with optimized splitting ratio, in a 0.5 mmx1 mm footprint. We demonstrate Gbps raw entropy-generation rates in a technology compatible with conventional CMOS fabrication techniques.