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For [CNotSynthType](https://github.com/CQCL/tket/blob/bdc682da0232db9ff7e3e6ceae7eeed750e139e8/pytket/binders/passes.cpp#L161-L172), I have the following few questions:
1. What does _swap-based alg…
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### Information
- **Qiskit Terra version**: 0.17
- **Python version**: 3.7
- **Operating system**: macOS Catalina
### What is the current behavior?
`synthesis(..., optimization_level=3, tra…
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Hi, qfast maintainers! I met a problem when I tried to synthesis a qft-3 circuit using qfast.
**Test Code**
```python
from qsearch.unitaries import qft
from qfast.synthesis import synthesize
…
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Occasionally the CI tests fail with this error on the M1 Mac:
```
============================= test session starts ==============================
platform darwin -- Python 3.8.11, pytest-6.2.4, …
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### Environment
- **Qiskit Terra version**: 0.19.0
- **Python version**: 3.9.4
- **Operating system**: Windows 10 Enterprise 64-bit
### What is happening?
Using `optimization_level=3` within th…
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It has been shown that, under certain conditions, it is more efficient to resynthesis parts of a circuit rather than attempting to route the circuit using SWAPs (https://arxiv.org/abs/1904.00633). It …
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### Environment
- **Qiskit Terra version**: 0.21.1
- **Python version**: 3.10.4
- **Operating system**: Ubuntu 22.04 LTS
### What is happening?
I have compiled a circuit from a list of di…
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**Describe the bug**
Transpile using `ibmq_qasm_simulator` works with qiskit-ibmq-provider but not qiskit-ibm-runtime
**Steps to reproduce**
```python
from qiskit import IBMQ
from qiskit …
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### Informations
- **Qiskit version**:
{'qiskit-terra': '0.19.2', 'qiskit-aer': '0.10.3', 'qiskit-ignis': '0.7.0', 'qiskit-ibmq-provider': '0.18.3', 'qiskit-aqua': None, 'qiskit': '0.34.2', …
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This issue accumulates `TwoQubitWeylDecomposition: failed to diagonalize M2` errors found by users .
To reproduce:
```python
from qiskit.quantum_info.synthesis import two_qubit_cnot_decompose
im…