How to Tell a Real Quantum Application From a Marketed One
Five industries have published evidence for quantum advantage. Roughly twenty do not. Three questions, asked in order, separate the two lists before any money…
What Quantum Computers Actually Do Better (And What They Don’t)
Four problem families where quantum computers have a real or plausible edge, ranked by the strength of the evidence, plus a screening test for…
Four Quantum Frameworks, One Bell Pair: A Practical Comparison for Developers
The same two-qubit circuit written in Qiskit, Cirq, PennyLane and Q#, then a decision path based on what you actually intend to build.
QAOA for People Who Aren’t Physicists
QAOA is a loop: a quantum circuit proposes candidate answers, a classical optimizer tunes the circuit, repeat. Here is the mechanism, without the physics…
Quantum Machine Learning Explained for Developers
What quantum machine learning is, the four model families you will meet, how classical data gets into a quantum computer, and what has actually…
Quantum Computing in Energy and Utilities: A Field Guide for Executives
Quantum belongs on two budget lines in an energy company, not one. A field guide to separating the research bet from the engineering deadline,…
Shor: Cryptanalysis by Physics
Shor's algorithm breaks RSA by turning factoring into period-finding, then reading the period with interference. The mechanism, and what it takes.
The Shape of a Quantum Algorithm
Every quantum algorithm is 4 moves: prepare, imprint, interfere, measure. A one-qubit worked example, and why only structured problems pay out.
Grover and the Honest Speedup
Grover gives a quadratic speedup, and almost nobody can use it. Why AES survives the quantum era, what the halving figure means, and what…
Quantum Parallelism: What “All at Once” Leaves Out
Superposition holds many states. Parallelism applies one operation to all of them. Interference decides what survives measurement, and that last step is the whole…