Quantum Leap: India's Quantum Computing Soars

In a landmark achievement that could redefine the future of computing, researchers at the Indian Institute of Science (IISc) Bangalore have demonstrated a significant advancement in quantum computing, achieving sustained entanglement of 64 qubits. This breakthrough, announced this week, places India at the forefront of the global race to build practical quantum computers.

Quantum computing, unlike classical computing which relies on bits representing 0 or 1, uses qubits. Qubits can exist in a superposition, representing 0, 1, or both simultaneously. This allows quantum computers to perform calculations exponentially faster than classical computers for certain types of problems. The challenge lies in maintaining the delicate quantum state of these qubits, a phenomenon known as entanglement, for a usable duration.

Sustained Entanglement: A Quantum Milestone

The IISc team, led by Professor Ananya Sharma of the Department of Quantum Technologies, has achieved a breakthrough in maintaining entanglement. Their novel approach involves using a unique combination of superconducting circuits and advanced error correction techniques. "Maintaining qubit coherence is like trying to balance a ball on your fingertip," explains Professor Sharma. "Our innovation allows us to extend that balance, opening doors to more complex quantum algorithms." The research, which was partially funded by a grant from the Department of Science and Technology (DST), is detailed in the latest issue of 'Quantum Information Processing'.

The significance of sustained entanglement cannot be overstated. Longer entanglement times translate directly into the ability to execute more complex quantum algorithms. This opens up possibilities in diverse fields, from drug discovery and materials science to financial modeling and cryptography. Imagine designing new drugs molecule by molecule, or creating materials with unprecedented properties – quantum computing promises to revolutionize these areas.

Real-World Applications and Quantum Supremacy

The potential applications of this quantum computing progress are vast and transformative. In the realm of drug discovery, quantum computers could simulate molecular interactions with unparalleled accuracy, accelerating the development of new treatments for diseases like cancer and Alzheimer's. In materials science, they could aid in the design of novel superconductors and energy-efficient materials. Furthermore, quantum computing promises to revolutionize financial modeling by enabling more accurate risk assessments and portfolio optimizations.

Speaking to News Reporter Live, Dr. Rajesh Kumar, a senior scientist at the Centre for Development of Advanced Computing (C-DAC), reportersays, "This achievement by IISc is a testament to India's growing capabilities in quantum technologies. It strengthens our position in the global race towards achieving quantum supremacy – the point at which a quantum computer can perform a task that no classical computer can accomplish in a reasonable amount of time."

Future Directions and the Path Forward

While this is a significant step forward, the journey towards building fault-tolerant, universal quantum computers is far from over. The IISc team is now focused on scaling up their system to hundreds of qubits and integrating advanced error correction protocols. They are also collaborating with other research institutions and industry partners to explore practical applications of their technology. "Our next goal is to build a quantum simulator capable of tackling real-world problems," adds Professor Sharma. This includes working with ISRO on optimizing satellite trajectories and with DRDO on developing secure communication protocols.

As of April 1, 2026, India is witnessing a new era of scientific innovation, driven by the relentless pursuit of knowledge and a commitment to technological advancement. The quantum leap achieved by IISc Bangalore is a shining example of this spirit, paving the way for a future powered by quantum technologies.