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Problem V from https://arxiv.org/pdf/1804.03719.pdf
Implement the Harrow, Hassidim, Lloyd (HHL) algorithm as an example, first the simple instance of
then a more generic version.
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### Informations
- **Qiskit version**: 0.7.0
- **Python version**: 3.7
- **Operating system**: windows10
### What is the current behavior?
When I simulate the HHL algorithm provided by …
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The default insertion strategy is currently NEW_THEN_INLINE. This is a) one of the most complicated insertion strategies, and b) not likely the one most NISQ folks want as they want to minimize depth…
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In some cases the kak decomposition appears to have an instability in the sign of the ZZ coefficient. Consider the following example:
```
a, b = cirq.LineQubit(0), cirq.LineQubit(1)
theta = 0.3
…
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A user should be able to implement a gate with a `_decompose_` into other known gates, and be able to simulate it.
...I actually thought it was working this way already (oops).
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A common operation to obtain a unitary from another unitary is exponentiation, e.g. T gate is Z^(1/4). In practice, the exponents are always rational numbers (AFAIK). The collection of rational powers…
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### Informations
- **Qiskit Terra version**: 0.7
- **Python version**: 3.6.8
- **Operating system**: Debian Linux
### What is the current behavior?
When using the backend ibmq_qasm_simulator …