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arXiv · 2402.03712

Single system based generation of certified randomness using Leggett-Garg inequality

Pingal Pratyush Nath·Debashis Saha·Dipankar Home·Urbasi Sinha
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Abstract

We theoretically formulate and experimentally demonstrate a secure scheme for semi-device-independent quantum random number generation by utilizing Leggett-Garg inequality violations, within a loophole-free photonic architecture. The quantification of the generated randomness is rigorously estimated by analytical as well as numerical approaches, both of which are in perfect agreement. We securely generate $9,19,118$ truly unpredictable bits. This opens up an unexplored avenue towards an empirically convenient class of reliable random number generators harnessing the quantumness of single systems.

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Pingal Pratyush Nath, Debashis Saha, Dipankar Home, Urbasi Sinha. 2024-02-06. Single system based generation of certified randomness using Leggett-Garg inequality. https://doi.org/10.1103/physrevlett.133.020802

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