qiskit.quantum_info.random_quantum_channel

random_quantum_channel(input_dims=None, output_dims=None, rank=None, seed=None)

Return a random CPTP quantum channel.

This constructs the Stinespring operator for the quantum channel by sampling a random isometry from the unitary Haar measure.

Parameter

• input_dims (int or tuple) – the input dimension of the channel.

• output_dims (int or tuple) – the input dimension of the channel.

• rank (int) – Optional. The rank of the quantum channel Choi-matrix.

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

Rückgabe

a quantum channel operator.

Rückgabetyp

Stinespring

Verursacht

QiskitError – if rank or dimensions are invalid.