Quantum Computing
One builder learning quantum computing from the ground up, in public. The math, the code, and the unglamorous reality, one verified step after another.
Posts
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19:04 Milestones Six defects in a verified n8n node for IBM Quantum
It passed n8n verification with green tests and 98 percent coverage. Then 121 seconds of real QPU time found what none of that could.
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12:45 Quantum Computing Quantum gates are just matrices you can run by hand
X, H, Z and the rotations: applying a gate is multiplying a matrix by a vector. Literally. Worked by hand, then checked in Qiskit.
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22:08 Quantum Computing Active recall for hard technical subjects
Rereading feels like progress and barely works. The method that actually retains hard material, and why it feels worse while it works.
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19:14 Quantum Computing Complex numbers are the gateway to quantum
Multiplying by i is a quarter turn, Euler's formula is the unit circle, and suddenly the imaginary number is the thing you measure.
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14:11 Quantum Computing The version trap that cost me an evening (Qiskit 2.x)
execute() is gone, Aer moved out, and the tutorials never got the memo. What died in Qiskit 2.x and the modern pattern that replaced it.