30459320656
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Ran 29 Jul 2026 02:18PM UTC

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Files 102

Run time 1min

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Committed 29 Jul 2026 02:07PM UTC coverage: 97.995% (-0.002%) from 97.997%

Build # 30459320656

Build Type

push

github

Committed by

web-flow

Commit Message

perf(transpiler): remove QDriftTrotterization's filter_diagonal_terms flag (#230)

filter_diagonal_terms=True re-filtered the Hamiltonian (deepcopy +
filter_diagonal_terms) on every single call to run(), i.e. once per
transpiled circuit, even though the filtered result is identical every
time. Measured at ~11.5ms on a 253k-term Hamiltonian, this alone
dominates the cost of generating many circuits from the same
Hamiltonian (e.g. an SqDRIFT ensemble).

Diagonal terms are a property of the Hamiltonian, not of a particular
sampling run, so filtering belongs upstream: on the operator, once,
before it is wrapped in an Evolution gate. Removing the flag closes off
the slower, stateful-seeming path entirely rather than just discouraging
it; filter_diagonal_terms() itself is unaffected and remains the
documented way to do this filtering.

Updates the sqdrift.rst guide to filter before constructing the
Evolution gate, and drops the now-obsolete non-FermionOperator
rejection test.

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com

Coverage Stats

10215 of 10424 relevant lines covered (98.0%)

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ID	Job ID	Ran	Files	Coverage
1	30459320656.1	29 Jul 2026 02:18PM UTC	102	98.0	GitHub Action Run

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