Source-device-independent monolithically integrated QRNG in a black box with generation rate in excess of 30 Gbit/s

TL;DR

This paper reports the first integrated quantum random number generator that is source-device-independent, housed in a black box, with a high generation rate of 35 Gbit/s, suitable for secure cryptographic applications.

Contribution

It introduces the first monolithically integrated, source-device-independent QRNG in a black box with a record generation rate exceeding 30 Gbit/s.

Findings

Achieved a 35 Gbit/s random number generation rate.

Device is fully integrated and housed in a black box.

Suitable for quantum key distribution applications.

Abstract

Quantum mechanics provides a secure means of generating random numbers, with applications in fields spanning scientific simulation to cryptography. The first source-device-independent monolithically integrated quantum random number generator is reported. With a generation rate of 35 Gbit/s, the device is based on an InP photonic integrated circuit with a quantum vacuum state entropy source, sampled by heterodyne coherent detection using an optical local oscillator. The entire device is conveniently housed in a black box and includes all the necessary driving and signal conditioning electronics, with electrical interfaces only; the exhibited security, compactness, and fast generation rate make the generator suitable for applications in QKD.