Quantum Now?

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Sylvain Duranton is the Global Leader of BCG X and a member of BCG’s Executive Committee. BCG X is the tech build & design unit of BCG. Turbocharging BCG’s deep industry and functional expertise, BCG X brings together advanced tech knowledge and ambitious entrepreneurship to help organizations enable innovation at scale.

, the world has been waiting – not for the mysterious Godot, but for quantum computing, which is much anticipated but has yet to arrive. But while the ghostly Godot never does show up, quantum is beginning to materialize.

Classical computers, such as the one you’re likely reading this article on now, rely on binary bits to store and process information as strings of zeros and ones. But quantum computers use quantum bits, or qubits, which can exist in a superposition of states, allowing for an exponential number of simultaneous combinations of zeros and ones. Don’t bother trying to visualize this - no one has ever seen a qubit. It’s all math.

But progress in developing quantum computing has been steady, and many people believe quantum computers will be a practical reality within a few years. IBM, the leader in quantum computing hardware, predicts that quantum computers will outperform classical computers in specific tasks by 2027. The first challenge will be cybersecurity: with quantum supremacy, many of our security devices will become instantly obsolete. Businesses should start now to shift to quantum-hardened encryption technologies. The American National Institute of Standardization and Technology is working on developing and standardizing post-quantum cryptographic algorithms and plans to impose a schedule for using encryption solutions capable of resisting quantum attacks.

 

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