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Weight-1 segment code (arXiv:1712.07067). Outputs a 3-mode, 2-qubit
code, which encodes all the vectors (states) with Hamming weight (occupation) 0 and 1. n_qubits = 2, n_modes = 3. A linear amount of qubits can be saved appending several instances of this code.
This code is highly non-linear and might produce a lot of terms.
Returns (BinaryCode): weight one segment code