Understand the
quantum circuit.
A rigorous path from your first qubit to experiments you can design and explain. Learn the model, work through the math, and test ideas in a local circuit simulator.
A measurement returns one classical sample.
A quantum computer does not reveal every possible answer. It transforms amplitudes so useful outcomes become more likely.
From first principles
to experimental method.
Build the foundations
Learn what a qubit is, how amplitudes work, and how to reason about single-qubit gates.
Think in circuits
Compose operations, understand entanglement, and study the structure of quantum algorithms.
Work like an experimentalist
Model noise, understand error correction and hardware, then design and report a capstone experiment.
Turn a prediction
into an experiment.
Assemble gates, choose a measurement basis, and draw finite samples from the ideal circuit you built.
Open the local simulatorPrecise enough
to keep using.
Learn a concept in context, check your understanding, then return to the reference when you need it.
Thirty worked lessons
Clear outcomes, equations, worked examples, experiments, and self-checks throughout.
Browse the curriculum LOCAL SIMULATOR / 02Build and measure circuits
Explore up to four qubits with a transparent ideal state-vector model.
Run an experiment REFERENCE / 03Definitions without shortcuts
Find the notation and ideas that recur across the course, in one searchable place.
Browse conceptsQubit Atlas is a frontend learning resource. The simulator runs in your browser using classical state-vector calculations; it does not connect to quantum hardware, create a backend account, or model device noise.
Learn how to interpret an experimentBuild the model before
believing the headline.
Begin with a state, make a prediction, and see what the measurement can tell you.