Raman Research Institute scientists make breakthrough in cybersecurity

Scientists at the Raman Research Institute (RRI) have created a new, user-friendly way to generate truly unpredictable random numbers, which is crucial for stronger encryption in quantum communications.

RRI said this advance could revolutionize how we protect sensitive data in the future a breakthrough in cyber security.

Stopping malicious agents

“The security of quantum communications relies on inherent randomness as a seed, such as randomness in measurement bases chosen by sender and receiver. This prevents malicious agents from deciphering secure information through prior knowledge of such choice of bases,” RRI said.

We have successfully generated random numbers using temporal correlations certified by the violation of the Leggett Garg Inequality (LGI). These are temporal analogues of the popularly known Bell inequalities — a set of mathematical expressions that compare the predictions of quantum mechanics with those of classical physics. Our experimental setup ensures a loophole-free violation of LGI, providing an additional advantage of generating loophole-free randomness,” said Professor Urbasi Sinha, faculty at RRI and the corresponding author of the paper published in the Physical Review Letters.

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