If quantum computers are so powerful, why do they need thousands—or even millions—of qubits just to work? (check the most powerful quantum computers here)
At first glance, this sounds like a contradiction.
We’re often told that quantum computers are insanely fast, capable of solving problems that would take classical computers longer than the age of the universe. In fact, a quantum computer with just a few thousand qubits could, in theory, break the strongest encryption schemes we use today.
So here’s the obvious question:
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We already have quantum processors with more than 1,000 qubits. Are we already at the brink of breaking modern cryptography?
The answer is : not yet.
