The Google announcement of the first experimentally achieved result of the so-called quantum supremacy, based on exploiting the multiqubit entanglement to the problem of randomness verification [https://doi.org/10.1038/s41586-019-1666-5], attracted attention to the classically ungrasped nature of the randomness itself and its verification. The elusive infiniteness of true randomness correlating with the quantum entanglement of the infinite number of entangled qubits asks for a fundamental description. We proposed a simplistic theoretical concept linking the multiqubit entanglement with the randomness in the public patent application in 2017 [PCT/PL2017/000133-WO/2019/132679] and in Sci. Rep. in 2020 [https://doi.org/10.1038/s41598-019-56706-2], the latter coincided in time with Google team announcement. We show that on the theoretical level, the presented concepts are equivalent in the fundamental sense. We discuss our quantum multiqubit entanglement based protocol for quantum random number generation, with unique features, like secure public randomness testing, overcoming local computational restrictions, or arbitrarily diminishing of the average time of the complex randomness testing of finite length bit sequence at the cost of multi-qubit entanglement level. Here, the randomness of the generated single sequence proves the randomness of all the other simultaneously generated sequences (or the randomness of the shorter sequence proves the randomness of longer sequence), which is a crucial result based on the multiqubit quantum entanglement.

Multiqubit entanglement for public randomness testing vs Google's quantum supremacy

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P4: Quantum information theory, software and algorithms

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The Institute of Physics and IOP Publishing, in partnership with the Chinese Physical Society (CPS) and the University of Science and Technology of China (USTC) are proud to have brought together the international quantum science community online for this inaugural conference.


Early career and leading researchers from universities, industry and government worldwide came together to share, learn and collaborate on the latest research and emerging areas of high interest across quantum science and technology. The broad themes covered by Quantum 2020 included:

Quantum communication;
Quantum computing and quantum simulation;
Quantum sensing, metrology and imaging;
Quantum information theory, software and algorithms;
Quantum foundations;
Quantum technology in industry.
The four-day event featured talks from world-renowned scientists, interactive poster sessions and two exciting panel discussions on the themes of Quantum Technology in Industry and Quantum Technology Programmes Around the World.


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Quantum 2020

The Institute of Physics and IOP Publishing, in partnership with the Chinese Physical Society (CPS) and the University of Science and Technology of China (USTC) are proud to have brought together the international quantum science community online for this inaugural conference.

Early career and leading researchers from universities, industry and government worldwide came together to share, learn and collaborate on the latest research and emerging areas of high interest across quantum science and technology. 

Witold Jacak

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Multiqubit entanglement for public randomness testing vs Google's quantum supremacy

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