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Intermediate3 qubitspar 5

Route around the coupling map

Entangle q0 with q2 — half the shots reading |000⟩ and half |101⟩, with q1 left clean at |0⟩. The catch is the hardware story: on this imaginary device only NEIGHBOURING qubits are connected, so a two-qubit gate may act on q0-q1 or q1-q2 but never directly on q0-q2. Build the pair on a connected edge and then move it, using CNOTs only. Par is 5.

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
5
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.