Week 2 · QR-2 · Qolour / Qubi workshop + guided course chapters + circuit lab
Qubit Fundamentals — Superposition, Entanglement, Interference, Circuits
Hands-on intuition before formalism.
Partner: Qolour · Q-CTRL Black Opal · IQM cheat sheet · 6–8 hours
Why this week
Business and baseline work only stick if people share a physical picture of a qubit. Qolour’s model qubits and games are the fastest path we have seen for mixed-background cohorts.
Week 2 is the physics-without-the-gatekeeping week. Using Qolour’s qubit workshops and the Qubi course, learners hold the ideas — superposition, measurement, entanglement, interference, gates, and simple circuits — before anyone asks them to write a Hamiltonian.
Learning outcomes
- Explain superposition, measurement, entanglement, and interference without mixing them up.
- Describe a qubit versus a bit, and what a gate and a circuit actually do.
- Read a tiny circuit (H, X, Z, CNOT) and predict the qualitative result.
- State what fidelity and noise mean at a practitioner level.
Modules
What is quantum, and what is a qubit?
2 hours
Outcomes
- Contrast classical bits with qubits.
- Connect measurement to the loss of superposition.
Activities
- Qolour Qubi course: 1.1–1.4 (what is quantum, measurement, qubit, math of a qubit).
- Q-CTRL Black Opal: Superposition, Qubits, Measurement modules.
- Workshop game: discover the rules by play, not lecture.
Entanglement, interference, and no-signaling
2 hours
Outcomes
- Give a working definition of entanglement that a colleague could repeat.
- Say what interference is for in algorithms, not only in physics class.
Activities
- Qubi course: 1.5–1.6 and selected Chapter 2 (Bell, at facilitator discretion).
- Pair discussion: “what entanglement is not.”
Gates, circuits, and fidelity
2–3 hours
Outcomes
- Identify Hadamard, Pauli, and CNOT by what they are for.
- Relate circuit depth and noise to why NISQ experiments need baselines.
Activities
- Qubi course: 3.1, 3.3, 3.4 plus gate explainers (H, X, Z, CNOT, measurement).
- IQM circuit-magicians cheat sheet (CC-BY-SA) as the gate wall chart.
- Quantum Enigmas 001 (treasure door) or Black Opal Circuits module.
- Optional: run the same tiny circuit on IBM hardware via the Classroom Account.
Deliverable
One-page “qubit card”: four definitions in your own words (superposition, entanglement, interference, circuit) plus one misconception you used to hold.
Assessment
Short concept check (10 items) plus the qubit card. Passing = no category mix-ups (e.g. calling entanglement “a vibe” or superposition “being in two cities”).