Quantum random number generation based on a perovskite light emitting diode

TL;DR

This paper demonstrates that perovskite LEDs can be used as secure, high-speed light sources for quantum random number generation, offering a simpler manufacturing process with potential environmental benefits.

Contribution

First implementation of PeLEDs in quantum random number generation, achieving high rates and security certification, highlighting their suitability for quantum technologies.

Findings

Random number generation rate exceeds 10 Mbit/s

PeLEDs are secure against eavesdroppers in quantum scenarios

Potential for environmentally friendly quantum device manufacturing

Abstract

The recent development of perovskite light emitting diodes (PeLEDs) has the potential to revolutionize the fields of optical communication and lighting devices, due to their simplicity of fabrication and outstanding optical properties. Here we demonstrate, for the first time, that PeLEDs can also be used in the field of quantum technologies by demonstrating a highly-secure quantum random number generator (QRNG). Modern QRNGs that certify their privacy are posed to replace widely adopted pseudo and true classical random number generators in applications such as encryption and gambling, and therefore, need to be cheap, fast and with integration capabilities. Using a compact metal-halide PeLED source, we generate random numbers, which are certified to be secure against an eavesdropper, following the quantum measurement-device-independent scenario. The obtained random number generation rate of more than 10 Mbit s$^{-1}$, which is already comparable to actual commercial devices, shows that PeLEDs can work as high-quality light sources for quantum information tasks, thus paving the way for future developments of quantum technologies. Lastly, we argue that the simpler PeLED manufacturing process, when comparing to solid-state devices, may have large environmental impacts when quantum technology systems become more mass produced, due to the possible lower carbon footprint.