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Merged
scarrazza merged 2 commits into from
Mar 13, 2026
Merged

checks for random_gaussian_matrix #1804

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c9fe12a
adding some args parsing and fixing tests for qibojit with disabled a…
scarrazza Mar 11, 2026
71735bb
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Mar 11, 2026
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14 changes: 14 additions & 0 deletions src/qibo/quantum_info/random_ensembles.py
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Original file line number Diff line number Diff line change
Expand Up @@ -125,15 +125,29 @@ def random_gaussian_matrix(
Returns:
ndarray: Random Gaussian matrix with dimensions ``(dims, rank)``.
"""
if not isinstance(dims, int):
raise_error(TypeError, f"dims must be an integer, but got {type(dims)}.")

if rank is None:
rank = dims
else:
if not isinstance(rank, int):
raise_error(TypeError, f"rank must be an integer, but got {type(rank)}.")
if rank > dims:
raise_error(
ValueError, f"rank ({rank}) cannot be greater than dims ({dims})."
)

if dims <= 0 or rank <= 0:
raise_error(ValueError, "Dimensions must be positive integers.")

backend = _check_backend(backend)

if seed is not None and not isinstance(seed, (int, np.random.Generator)):
raise_error(
TypeError, f"seed must be an integer or Generator, but got {type(seed)}."
)

backend.set_seed(seed)
return backend.qinfo._random_gaussian_matrix(dims, rank, mean, stddev)

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