The Cross Heads

Google gets an error-corrected quantum bit to be stable for an hour

(In addition to a standard surface code, Google includes a few qubits that handle a phenomenon called “leakage,” where a qubit ends up in a higher-energy state, instead of the two low-energy states defined as zero and one.) The key result is that going from a distance of three to a distance of five more […]

December 9, 2024 | Computer science, Google, logical qubits, Physics, quantum computing, quantum error correction, quantum mechanics, Science | No comments

Qubit that makes most errors obvious now available to customers

We’re nearing the end of the year, and there are typically a flood of announcements regarding quantum computers around now, in part because some companies want to live up to promised schedules. Most of these involve evolutionary improvements on previous generations of hardware. But this year, we have something new: the first company to market […]

November 20, 2024 | Computer science, dual-rail qubits, quantum computing, quantum mechanics, qubits, Science | No comments

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