Schematic of the broadband vacuum noise

Welcome to the ANU Quantum Random Numbers Server

This website offers true random numbers to anyone on the internet. The random numbers are generated in real-time in our lab by measuring the quantum fluctuations of the vacuum. The vacuum is described very differently in the quantum mechanical context than in the classical context. Traditionally, a vacuum is considered as a space that is empty of matter or photons. Quantum mechanically, however, that same space resembles a sea of virtual particles appearing and disappearing all the time. This result is due to the fact that the vacuum still possesses a zero-point energy. Consequently, the electromagnetic field of the vacuum exhibits random fluctuations in phase and amplitude at all frequencies. By carefully measuring these fluctuations, we are able to generate ultra-high bandwidth random numbers.

This quantum Random Number Generator is based on the papers: [Appl. Phys. Lett. 98, 231103 (2011), Phys. Rev. Applied 3, 054004 (2015)].

This website allows everybody to see, listen or download our quantum random numbers, assess in real time the quality of the numbers generated and learn more about the physics behind it.

We now support authenticated and secured connections for the live streams and random blocks.

Photo of the optical setup Photo of the embedded computer, FPGA and high speed data acquisition
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