New Delhi: For years, Digital Security has been chained to a dirty little secret: our “random numbers” aren’t really random. Computers simulate chance, but deep down they’re still deterministic machines playing pretend. Hackers know that. Governments know that. And anyone with enough resources can eventually crack those patterns.
Enter certified quantum randomness, not a mouthful, but a game-changer. At the Raman Research Institute (RRI) in Bengaluru, a team led by Professor Urbasi Sinha has spent the last three years proving that unpredictability itself can be weaponized.
Their latest breakthrough? Generating certified randomness on a single qubit, using nothing more than time-based measurements, and doing it on a cloud-accessible IBM quantum computer. Translation: no more sprawling optical labs, no more Rube Goldberg experiments. Just physics doing what physics does best, keeping secrets nobody can guess.
Randomness Runs the World
If you’ve got a bank account, if you send a WhatsApp message, if you’ve ever logged into anything, your life is built on randomness. Security keys, encryption protocols, and even the way we protect nuclear codes depend on numbers that can’t be predicted.
Here’s the problem: silicon doesn’t do “random.” Traditional algorithms generate pseudo-random numbers by following rules. Smart rules, but still rules. And rules can be cracked.
Quantum mechanics, on the other hand, is fundamentally unpredictable. Flip a quantum coin, you really don’t know whether it’ll be heads or tails until you measure it. That’s gold for cryptography. The trick is proving that this unpredictability isn’t just noise but certified randomness, randomness guaranteed by the laws of physics, not by human assumptions.
Bengaluru’s Quantum Trilogy
The RRI team has been moving with the precision of a Netflix trilogy arc: foundation → certification → deployment.
- 2022: Breaking classical predictability. Using photons, they tested correlations in time and violated Leggett-Garg inequalities, fancy physics speak for “sorry, classical physics, quantum wins.” This wasn’t just another lab curiosity; it was the first loophole-free photonic architecture proving quantum behavior in time.
- 2024: From theory to device. The same architecture gave rise to a quantum random number generator. Think of it as a slot machine spitting out a million coin flips, each one certified by quantum laws. Not “random enough.” Not “statistically random.” Certified random.
- 2025: Cloud goes quantum. Here’s the mic drop. Partnering with IISc and the University of Calgary, the team showed that you don’t need exotic setups. A single qubit, measured in time, running on IBM’s cloud-based superconducting processors, could pump out certified randomness. No lab coats required. Just log in and let quantum do its thing.
From Lab Toys to Global Tech
Until now, certified randomness was a trophy only high-end labs could display. You needed entangled particles, optical tables, and enough cables to wire up a spaceship. Useful? Sure. Scalable? Not even close.
RRI’s pivot was simple but devastatingly effective: swap space for time. Instead of separating particles across kilometres and checking their correlations, they just looked at one qubit across different time intervals. Same certification. Far less baggage.
As PhD student Pingal Pratyush Nath at IISc put it: “The simplicity is precisely what makes it powerful.” Translation: even today’s noisy, small quantum processors, often dismissed as toys, can deliver something as fundamental as certified randomness.
Certified Quantum Randomness – Hackers Hate It!
Certified quantum randomness isn’t a science fair ribbon. It’s a weapon-grade resource for cryptography. Imagine a future where your digital keys aren’t just “hard to guess.” They’re impossible to guess. Not because of better algorithms. Not because of bigger servers. But because physics itself guarantees that no one can predict them.
For India, this is not just a notch on the scientific belt. It’s a shot at quantum sovereignty. In a world where digital espionage and state-level hacking are the new Cold War, having homegrown tech that underpins unhackable communications is a national security strategy, not just academic flex.
And let’s not miss the irony here. The same IBM quantum processors once mocked as too noisy for “useful” work are now being used to prove that certified randomness can be democratized. You don’t need to be RRI or Google to test this. In principle, anyone with cloud access could play. That’s disruption.
The Global Context
The world has chased randomness for decades. From radioactive decay to lava lamps to stock market noise, scientists have tried every trick to escape determinism. Quantum mechanics finally gave us the real deal, but until now, it was locked behind experimental wizardry.
By shifting the battlefield to cloud quantum computers, RRI and its collaborators have thrown open the gates. The certified randomness they demonstrated isn’t just a novelty; it’s a benchmark for quantum hardware, a tool to stress-test processors, and a foundation for next-gen encryption.
No wonder global labs, from NIST’s Quantum Randomness Program to European quantum security initiatives, are watching this space closely.
India’s Quantum Moment
Let’s zoom out. India has been investing heavily in quantum tech, from the National Mission on Quantum Technologies and Applications (NM-QTA) to private startups aiming to build quantum-safe communication networks. RRI’s results don’t just add to the literature; they put India at the front line of a global race.
While Silicon Valley debates whether quantum computers will break RSA encryption in 20 years, Bengaluru scientists just showed they can already strengthen cryptography today. That’s the kind of leapfrogging that defines modern tech geopolitics.
What’s Next?
Three years, three papers, and one global breakthrough later, the roadmap is clear. Certified randomness won’t stay a lab curiosity. It’ll become part of the security backbone in banking, defense, and maybe even personal apps.
Today, your smartphone generates “random” keys with algorithms that can, in theory, be reverse-engineered. Tomorrow, it could tap into a quantum server spitting out certified unguessable numbers. When that happens, password leaks and brute-force hacks might finally go the way of floppy disks.
Also Read: India Geopolitics 2025: Bold Hedging in a Turbulent World
