Quantum superposition
Rotate one qubit into a coherent state with amplitudes for two outcomes.
Back to learning pathSingle-qubit statesWhy this experiment matters
What you will do
See how a qubit carries amplitudes for |0⟩ and |1⟩ before measurement.
- 01
Prepare the qubit in |0⟩.
- 02
Use Rᵧ(θ) to rotate it; 90° creates equal probabilities.
- 03
Measure fresh preparations many times and compare the counts.
Predict before you measure
Choose one answer to unlock the measurement.
INTERACTIVE
Interactive model
Move the control, then run a measurement. This is a teaching simulation—not hardware output.
Choose one answer to unlock the measurement.
Predict before you measureMake a prediction, then run the measurement to reveal the expected and sampled results.
Measurement results
What the result shows
Each result is 0 or 1, while repeated fresh preparations reveal the predicted distribution.
GUIDED VIDEO
Watch the experiment
Follow the experiment with English narration and English subtitles.
See how a qubit carries amplitudes for |0⟩ and |1⟩ before measurement.
Full transcript5 · 1:00
- 01Overview
See how a qubit carries amplitudes for |0⟩ and |1⟩ before measurement.
- 02Experiment steps 1
Prepare the qubit in |0⟩.
- 03Experiment steps 2
Use Rᵧ(θ) to rotate it; 90° creates equal probabilities.
- 04Experiment steps 3
Measure fresh preparations many times and compare the counts.
- 05What to observe
Each result is 0 or 1, while repeated fresh preparations reveal the predicted distribution.
06 · CHECK
Check what you learned
Make a prediction, then run the measurement to reveal the expected and sampled results.