RRI technique yields certified randomness with one qubit Researchers built simple quantum circuits

• Researchers at Raman Research Institute developed quantum circuits on IBM’s superconducting quantum computers to generate certified random numbers using one qubit.

• The technique addresses the limitations of conventional algorithms that create pseudorandom numbers, which can be predictable and insecure for cryptography.

• Quantum mechanics, specifically the Leggett-Garg inequality (LGI), was employed to certify the randomness of the outputs by ensuring measurement independence over time.

• Despite some interference from noise, the experiments consistently violated the LGI, affirming the randomness derived from quantum principles.

• This method of generating secure random numbers is practical, requiring only a single qubit and minimal circuit complexity, making it accessible via cloud platforms.

• The findings highlight the role of error mitigation techniques in increasing trust and reliability in quantum hardware.

• The research underscores the potential societal benefits of certified randomness for applications like encryption and secure communications.

• By validating quantum theory through LGI violations, this work offers insights into the future of quantum device benchmarking and real-world problem-solving capabilities.

• The study’s results were published in Frontiers in Quantum Science & Technology in September.

Quantum Circuits Research is important topic for Civil service exam (WBCS).

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