qiskit.quantum_info.random_density_matrix

random_density_matrix(dims, rank=None, method='Hilbert-Schmidt', seed=None)

Generator a random DensityMatrix.

パラメータ

• dims (int or tuple) – the dimensions of the DensityMatrix.

• rank (int or None) – Optional, the rank of the density matrix. The default value is full-rank.

• method (string) – Optional. The method to use. 『Hilbert-Schmidt』: (Default) sample from the Hilbert-Schmidt metric. 『Bures』: sample from the Bures metric.

• seed (int or np.random.Generator) – Optional. Set a fixed seed or generator for RNG.

戻り値

the random density matrix.

戻り値の型

DensityMatrix

例外

QiskitError – if the method is not valid.