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Coupling map construction in SabreSwap panics with an overflow error

bugSomething isn't workingSomething isn't working

good first issueGood for newcomersGood for newcomers

Status: Open.

#16272 In Qiskit/qiskit;

· alexanderivrii opened on May 26, 2026

BasicSwap silently inflates circuit global_phase

bugSomething isn't workingSomething isn't working

mod: transpilerIssues and PRs related to TranspilerIssues and PRs related to Transpiler

Status: Open.

#16271 In Qiskit/qiskit;

· YujinSong-hep opened on May 26, 2026

pyo3_runtime.PanicException: no entry found for key in /project/rustworkx-core/src/token_swapper.rs:141:41

bugSomething isn't workingSomething isn't working

Status: Open.

#16269 In Qiskit/qiskit;

· lmaltsis opened on May 25, 2026

pyo3_runtime.PanicException: duplicate qubit 1 in remapped term in quantum_info/src/sparse_observable/mod.rs:834:21

bugSomething isn't workingSomething isn't working

Status: Open.

#16268 In Qiskit/qiskit;

· lmaltsis opened on May 25, 2026

pyo3_runtime.PanicException: float scores must not return nan in src/crates/circuit/src/vf2.rs:387:1

bugSomething isn't workingSomething isn't working

Status: Open.

#16267 In Qiskit/qiskit;

· lmaltsis opened on May 25, 2026

ParameterExpression add/sub simplification treats division as multiplication, observable via assign_parameters()

bugSomething isn't workingSomething isn't working

Status: Open.

#16263 In Qiskit/qiskit;

· YujinSong-hep opened on May 25, 2026

ParameterExpression division simplification gives wrong values, observable via QuantumCircuit.assign_parameters()

bugSomething isn't workingSomething isn't working

Status: Open.

#16262 In Qiskit/qiskit;

· YujinSong-hep opened on May 25, 2026

ParameterExpression.gradient() misses chain-rule factors for power expressions with composite base or exponent

bugSomething isn't workingSomething isn't working

Status: Open.

#16260 In Qiskit/qiskit;

· YujinSong-hep opened on May 24, 2026

Parameter binding incorrectly evaluates p**n ± q**n as (p ± q)**n

bugSomething isn't workingSomething isn't working

Status: Open.

#16259 In Qiskit/qiskit;

· YujinSong-hep opened on May 24, 2026

SparsePauliOp.simplify should use ParameterExpression functionality instead of using sympify

mod: quantum infoRelated to the Quantum Info module (States & Operators)Related to the Quantum Info module (States & Operators)

Status: Open.

#16255 In Qiskit/qiskit;

· matteoacrossi opened on May 23, 2026

make c does not work with cross-compilation

C APIRelated to the C APIRelated to the C API

Status: Open.

#16250 In Qiskit/qiskit;

· garrison opened on May 22, 2026

Cleanup qiskit/__init__.py

Status: Open.

#16248 In Qiskit/qiskit;

· Cryoris opened on May 22, 2026