Quantum Random Number Generation with Uncharacterized Laser and Sunlight
arXiv:2101.03460 · doi:10.1038/s41534-019-0208-1
Abstract
The entropy or randomness source is an essential ingredient in random number generation. Quantum random number generators generally require well modeled and calibrated light sources, such as a laser, to generate randomness. With uncharacterized light sources, such as sunlight or an uncharacterized laser, genuine randomness is practically hard to be quantified or extracted owing to its unknown or complicated structure. By exploiting a recently proposed source-independent randomness generation protocol, we theoretically modify it by considering practical issues and experimentally realize the modified scheme with an uncharacterized laser and a sunlight source. The extracted randomness is guaranteed to be secure independent of its source and the randomness generation speed reaches 1 Mbps, three orders of magnitude higher than the original realization. Our result signifies the power of quantum technology in randomness generation and paves the way to high-speed semi-self-testing quantum random number generators with practical light sources.
24 pages, 5 figures
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- A Comprehensive Review of Quantum Random Number Generators: Concepts, Classification and the Origin of Randomness
- Source-independent quantum random number generator against tailored detector blinding attacks
- Multi-bit quantum random number generator from path-entangled single photons
- Measurement-device-independent quantum random number generation over 23 Mbps with imperfect single-photon sources
- Numerical Framework for Semi-Device-Independent Quantum Random Number Generators