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Dear Quantum Computing Industry

Amit Hagar | Dear QC Industry

Letters to an industry that does not always want to read them. A Philosopher of Physics on what quantum computing is, what it is not, and what the press releases leave out.

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Latest Issues

The trusted advantage lasted two weeks

On July 30, IBM and its partners published three papers at once and blogged them under the title “Researchers demonstrate quantum advantage through trusted quantum computation: Demonstration shows trusted quantum computation in regimes wher...

37 hours ago
1

To Balance a Pencil on Its Tip

In the fall of 2006, two months into my assistant professorship at Indiana University Bloomington, I started writing a grant proposal to the National Science Foundation. The idea I wanted money for was, roughly, that the most celebrated mac...

6 days ago
2
3

The Wrong Door, Twice

The portrait, once painted, did the work. Quiroz and Lidar’s 2024 result on IBM superconducting hardware showed a passive encoding outperforming the same qubits running dynamical decoupling without the encoding, by 23 percent. The 1998 idea...

13 days ago
1
3

Q-day may come, just not anytime soon

When is Q-Day (the day a quantum computer would break public-key encryption)? Depends who you ask, and whether they actually read the papers.

On August 21 the American Physical Society published Google’s cryptocurrency paper in PRX Quantu...

16 days ago
1
3

The Portrait that Took 25 Years to Paint

The active program needs a number. The passive program needs a portrait. That is the difference, and that is most of the story.

To use a decoherence-free subspace, you have to know how the environment couples to your qubits. Not on average...

20 days ago
1
2

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  • Amit Hagar | Dear QC Industry

    A scientist and lately also a farmer. Trained in physics and philosophy. Follows questions wherever they lead, distilling signal from noise — quantum computing, digital twins, commodities markets, and information platforms

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