The Blog
6 posts · page 1 of 1
QAOA for Max-Cut: Turn a Graph into a Quantum Circuit
Map a Max-Cut graph to QAOA cost and mixer layers, then use measured bitstrings to score candidate solutions.
The SWAP Test: Estimating Similarity Between Quantum States
Use one ancilla and a controlled-SWAP gate to turn the overlap between two quantum states into a measurable probability. Then build the circuit in Qis…
The Bloch Sphere for Programmers: Seeing What Single-Qubit Gates Do
Use the Bloch sphere to see how single-qubit gates rotate states, change relative phase, and alter measurement outcomes.
Quantum Phase Estimation: The Idea Behind the Quantum Fourier Transform
See how controlled powers of a unitary and the inverse QFT turn a hidden eigenphase into a finite-precision bit string.
Quantum Teleportation in Qiskit: Move a State, Not a Particle
Transfer a qubit’s state with shared entanglement, two classical bits, and conditional corrections. See why it moves information, not matter.
Your First Quantum Program: Build a Bell Pair with Qiskit
Build a tiny two-qubit Bell-state circuit in Qiskit, run it on a simulator, and learn what its measurement results do - and do not - tell you.