rand_map_with_BCSZ_dist

forest.benchmarking.operator_tools.random_operators.rand_map_with_BCSZ_dist(dim: int, kraus_rank: int) → numpy.ndarray

Given a Hilbert space dimension dim and a Kraus rank K, returns a dim^2 by dim^2 Choi matrix J(Λ) of a channel drawn from the BCSZ distribution with Kraus rank K [RQO].

[RQO]

Random quantum operations. Bruzda et al. Physics Letters A 373, 320 (2009). https://doi.org/10.1016/j.physleta.2008.11.043 https://arxiv.org/abs/0804.2361

Parameters:

• dim – Hilbert space dimension.
• kraus_rank – The number of Kraus operators in the operator sum description of the channel.

Returns:

dim^2 by dim^2 Choi matrix, drawn from the BCSZ distribution with Kraus rank K.