iqm.benchmarks.compressive_gst.mgst.additional_fns.randKrausSet_Haar

iqm.benchmarks.compressive_gst.mgst.additional_fns.randKrausSet_Haar(d: int, r: int, rK: int) → ndarray

Generates random set of Kraus operators.

Parameters:

• d (int) – Number of gates

• r (int) – Superoperator dimension of the gates given by the square of the physical dimension

• rK (int) – Number of Kraus operators per gate (“Kraus rank”)

Returns:

Each subarray along the first axis contains a set of Kraus operators.

The second axis enumerates Kraus operators for a gate specified by the first axis.

Return type:

K

Notes

Let pdim be the physical dimension. Then a set of Kraus operators is generated by taking the first

pdim columns of a random unitary of size rK*pdim. The random unitary is generated according to the Haar measure.