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Advanced3 qubitspar 4

Gate golf: the odd one out

Half the shots must read |011⟩ and half |100⟩ — q0 and q1 always agree with each other, and q2 always disagrees with both. Nothing else ever appears. Par is 4. The state is exactly as entangled as GHZ; the extra gate pays for the disagreement.

Stuck on the concept? Read Entanglement.

Target
What you are aiming at100 %
|000⟩
|001⟩
|010⟩
|011⟩
|100⟩
|101⟩
|110⟩
|111⟩
Your circuit
What you are producing right now100 %
|000⟩
|001⟩
|010⟩
|011⟩
|100⟩
|101⟩
|110⟩
|111⟩
Gates
Single qubit
Two qubit
Three qubit
Other

Select a gate to see what it does, then tap a wire — or Tab to a wire and press Enter — to place it.

Circuit
Gates
0
Par
4
Pick a gate from the palette to start building.

Pick a gate, then tap a cell — or Tab into the grid and use the arrow keys and Enter — to place it.

Practice more like this

Generate a fresh target state drill at this difficulty. Every generated puzzle is verified solvable by execution before you see it — the generator runs its own solution through the same simulator and grader that will judge yours.