Key takeaways
- After five years of writing detailed technical papers on quantum computing as an unaffiliated observer, Jack concludes the field still has not produced a clear, practical quantum advantage for real business problems.
- He argues that hardware progress, especially qubit quality and error rates, has been slower than the public narrative from vendors suggests.
- He sees a persistent gap between marketing claims of near-term useful quantum computing and the actual state of algorithms, error correction, and applications.
- He is stepping back rather than quitting outright, planning to revisit the field once concrete milestones like reliable logical qubits or a real commercial use case actually materialize.
Summary
Jack Krupansky occupies a unique place in the quantum community. Since 2018, as a non-affiliated observer, he wrote dozens of highly-detailed informal papers exploring various aspects of quantum computing. He recently announced that his five-year immersion in quantum computing is ending, and I was curious to know why. Though Jack shies away from microphones (at least from my microphone), he agreed to a written interview to discuss his thoughts and outlook.
Read the full interview at the Quantum Computing Report site