All labs
75 min

Circuit Builder Lab

Build small one- and two-qubit circuits, step through the state, and inspect final measurement probabilities.

Investigation

Create |+>, |->, and |Phi+> circuits; for each, list the final state and Z-basis probabilities.

Learning evidence

A circuit table with gates, intermediate state, final probabilities, and one misconception warning.

Quantum Circuit Builder

Ideal state-vector simulation in your browser, not a quantum-hardware run. Basis labels display q0 as the most-significant bit.

step 0/0

State amplitudes

|00>1
|01>0
|10>0
|11>0

Measurement probabilities

|00>100.0%
|01>0.0%
|10>0.0%
|11>0.0%
Complete the required interaction before marking this lab complete.

Completion checks

  • Uses a consistent qubit order.
  • Separates gates from measurements.
  • Includes at least one entangling circuit.