Strong empiricalEntanglement benchmark
Bell-pair ladder benchmark · 4 qubits
A bank of disjoint Bell-pair preparations that exposes parallel two-qubit-gate structure.
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The defining behavior was checked exactly: a mathematical identity, a full statevector or stabilizer simulation, or an exhaustive basis-state truth table.
The design was verified by construction plus measured evidence: statistical re-execution, small-instance analytic agreement, sub-block, echo, or invariant checks. Scale-specific bugs can still survive.
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A bank of disjoint Bell-pair preparations that exposes parallel two-qubit-gate structure.
A fixed all-ones Bernstein–Vazirani instance with the last qubit used as the phase-kickback ancilla.
A deterministic H/S/CNOT brickwork circuit suited to stabilizer and compiler regression checks.
A width-scaled GHZ preparation circuit with one Hadamard and a nearest-neighbor CNOT chain.
A reproducible hardware-efficient VQE layer with parameterized RY rotations and a linear CNOT entangler.
A two-axis variational layer followed by a nearest-neighbor CZ entangling pattern.
A first-order nearest-neighbor ZZ evolution scaffold expressed as CNOT–RZ–CNOT blocks.
A linear graph-state preparation circuit using one Hadamard per qubit and nearest-neighbor CZ edges.
A Hartree–Fock-like computational-basis seed followed by tunable rotations and a CNOT chain.
A deterministic parity-oracle circuit that marks alternating input wires through phase kickback.
A fixed-data feature-map scaffold with Hadamards, local phase rotations, and pairwise ZZ encodings.
A fixed-angle p=1 MaxCut-style QAOA layer on a cycle graph, including cost and mixer blocks.
A cyclic graph-state preparation circuit with Hadamards followed by CZ interactions around a ring.
A forward-and-reverse nearest-neighbor SWAP network for testing routing and qubit-order preservation.
A problem-inspired layer combining ZZ interactions and transverse X rotations for a ring Ising model.
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