The Grand Challenge of Quantum Applications — mentioned by vtomole

Sun, 28 Dec 2025 05:08:12 GMT

You're right. I didn't sufficiently separate experimental physics QC from engineering QC. On the engineering end, the question on if a large-scale quantum computer can be built is leaning to be "yes" so far. DARPA QBI https://www.darpa.mil/research/programs/quantum-benchmarking... was made to answer this question and 11 teams have made it to Stage B. Of course, only people who believe DARPA will trust this evidence, but that's all I have to go on. On the application front, the jury is still out for applications that are not related to simulation or cryptography…

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The Grand Challenge of Quantum Applications — mentioned by vtomole

Fri, 26 Dec 2025 16:05:22 GMT

"early days" means that the 1998 computer didn't have qubits that were below the error correction threshold. Now we have hundreds of qubits below threshold. We'll need millions of qubits like these for quantum computing to be useful. If that take decades, this is the "early days" relatively. It's not only early days in hardware, it's early days in practical applications as well: https://arxiv.org/abs/2511.09124

Paper and discussion history. A mention is not an endorsement.

The Grand Challenge of Quantum Applications · HackerPapers discussions

The Grand Challenge of Quantum Applications — mentioned by vtomole

The Grand Challenge of Quantum Applications — mentioned by vtomole