Any good application for high speed true random number generator

First I need to admit I am a scientist on photonics, NOT on computer science.

Our lab somehow made a random number generator based on quantum laser with random grating. It passed the NIST test for random number, @ 1.6Gbps speed. (-p4796 Vol. 42, No. 23 / December 1 2017 / Optics Letters)

But I am having difficulty to find some good application for this.

Anyone could share their thoughts?

Thanks,