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IBM discloses plans to build first large-scale fault-tolerant quantum computer


IBM unveiled plans for the world’s first large-scale, fault-tolerant quantum computer, with scalable quantum computing.

“Our expertise across mathematics, physics and engineering is paving the way for a large-scale, fault-tolerant quantum computer — one that will solve real-world challenges and unlock immense possibilities for business.” This work builds on a groundbreaking approach to error correction featured on the cover of Nature that introduced quantum low-density parity check (qLDPC) codes. IBM Quantum Loon, expected in 2025, is designed to test architecture components for the qLDPC code, including “c-couplers” that connect qubits over longer distances within the same chip.

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