In a remarkable milestone for quantum computing, Rigetti Computing has announced it has achieved a 99.5% two-qubit gate fidelity — a significant step toward making quantum processors more reliable and practical for real-world applications.
So, what exactly does this mean? In quantum computing, a two-qubit gate is fundamental for performing operations between two quantum bits (qubits). High fidelity in this context means the operation works almost perfectly. At 99.5% fidelity, Rigetti is edging closer to the level needed for fault-tolerant quantum computing — a long-standing goal in the quantum community.
This leap in performance wasn’t just luck. Rigetti's achievement is the result of years of dedicated engineering and physics research. By improving its chip fabrication and control systems, Rigetti managed to minimize noise and errors, two of the biggest challenges in quantum processing.
Why should this matter to you? Because better quantum processors will eventually change how we solve the world’s hardest problems — from drug discovery and cryptography to logistics and artificial intelligence. The higher the fidelity, the more complex the computations that can be handled without errors snowballing out of control.
Rigetti’s announcement puts it in closer competition with giants like IBM and Google, who are also racing toward quantum supremacy. But for a smaller, dedicated quantum startup, this accomplishment proves that innovation doesn’t always come from size — it comes from vision and persistence.
As the quantum era approaches, moments like this one are the signposts showing we’re getting closer. With 99.5% gate fidelity, Rigetti isn’t just improving a number — it’s redefining what’s possible.
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