Quantum Supremacy: Why Google’s Quantum Leap Still Matters Quantum supremacy refers to the point at which a quantum computer can perform a task that is practically impossible for any classical computer. In 2019, Google claimed it had achieved this milestone using its 53-qubit Sycamore processor, performing a computation in 200 seconds that would take the world’s fastest supercomputer over 10,000 years. What Is Quantum Supremacy? Quantum supremacy does not mean quantum computers are superior in all aspects. It means they’ve crossed a boundary—a proof-of-concept demonstration that quantum processors can solve specific problems exponentially faster than classical machines. Google's experiment ran a random quantum circuit sampling task, primarily to show computational feasibility, not real-world application. Why It Still Matters While some critics argued the test lacked practical utility, the achievement symbolized a historic turning point. It validated decades of...
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