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

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.

The journal version

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Cited by in corpus (5)

• Applications of Certified Randomness
• Certified Random Number Generation using Quantum Computers
• Temporal nonclassicality in continuous-time quantum walks
• Quantum Non-Demolition Measurements and Leggett-Garg inequality
• Evaluating Quantumness, Efficiency and Cost of Quantum Random Number Generators via Photon Statistics