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## Description
Improve API and tests and code utilities of the existing Model Hamiltonian package.
## :books: Package Description and Impact
In many cases, the true many-electron Hamiltonian is …
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### Expected behavior
The two-qubit decomposition for qml.QubitUnitary should be valid upto a high-precision.
### Actual behavior
The two-qubit decomposition for qml.QubitUnitary is only valid upto…
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Dear people from PennyLaneAI,
First of all, this framework looks absolutely amazing ! Congratulations !!!
I was wondering if you would be willing to collaborate with the
PyTorch Lightning Team…
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### Expected behavior
This code is not working
```python
import pennylane as qml
a = 0.3
angles = [.1,.2,.3,.4,.5]
print(qml.matrix(qml.qsvt(a, angles, wires = [0], convention = "Wx")))
…
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I recently came across the parallel "Jumbo converters" in [ioChem-BD](https://docs.iochem-bd.org/en/latest/conversion-cml.html) for quantum chemistry code outputs to CML ([Java codebase](https://gitla…
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Hello,
If I try to run the example codes, say for example "00-h2o.py" . I endup with an error that says
` File "~/quantum_chemistry/lib/python3.10/site-packages/gpu4pyscf/dft/numint.py", line …
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### Expected behavior
Keyword arguments don't get ignored
### Actual behavior
They get ignored.
### Additional information
[sc-69429](https://app.shortcut.com/xanaduai/story/69429/bug-s…
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Currently the SAD guess is read from 2 files:
- The basis set file in DALTON format (I believe) in `O.bas`
- The atomic density in `O.dens`
The two can be unified into a single JSON file `O.json` t…
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I'm opening this issue to track known issues with running the tutorials on Colab and discussing potential solutions:
- Colab installation is slow: The tutorials currently install deepchem as in thi…
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### Expected behavior
This code should work (it works with numpy)
```python
dev = qml.device("default.qubit")
@qml.qnode(dev)
def circuit():
qml.ctrl(qml.RX, control = [0,1,2])(jnp.array(3…