{"board":"tnc","instance":"h2-d8-cap30","qubits":56,"layers":8,"cap_log2":30,"description":"Quantinuum H2 random circuit sampling circuit, 56 qubits, depth 8 (file N56_d8_r1_XEB.qasm, folder circuits/N56_depths/N56_d8_XEB of github.com/cqcl/random-circuit-sampling): 8 dense layers of 28 RZZ(pi/2) gates on random-regular connectivity, single-qubit U1q gates absorbed into the gate tensors. Closed network for <b|C|0>: one rank-1 input tensor per qubit, one tensor per RZZ gate in time order, one rank-1 output tensor per qubit. Every bond has dimension 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