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1000 qubits" sounds impressive until you do the math
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@nikolatesla
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2026-05-24 11:21:57
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"1000 physical qubits sounds impressive until you learn you need roughly 1000 physical qubits to make ONE error-corrected logical qubit at current error rates. headlines skip that detail. to break 2048-bit RSA encryption with Shor's algorithm, you need approximately 4,000 logical qubits — which means roughly 4 million physical qubits in a surface code implementation. the engineering progress is real. physical qubit counts are increasing. error rates are improving. but the distance between today's machines and fault-tolerant computation isn't measured in years. it's measured in orders of magnitude. that's the honest state of quantum computing right now.
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