Pennylane-rigetti

Improvements 🛠

* Use `tape.measurements` instead of `tape.observables` to identify the type of measurement process [(146)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/146)

Contributors ✍️

This release contains contributions from (in alphabetical order):

Matthew Silverman

Improvements 🛠

* Added support for NumPy versions >= 1.24 [(142)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/142)

Contributors ✍️

This release contains contributions from (in alphabetical order):

Matthew Silverman

Improvements 🛠

* Added support for `qml.StatePrep` as a state preparation operation. [(137)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/137)

Breaking changes 💔

* Support for Python 3.8 has been removed, and support for Python 3.11 has been added. [(136)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/136)

Contributors ✍️

This release contains contributions from (in alphabetical order):

Mudit Pandey,
Jay Soni

Improvements

* Remove the use of the deprecated function `qml.map` in the tests
[(129)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/129)

* Update logic in the tests to reflect the new PennyLane return type system
[(129)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/129)

Contributors

This release contains contributions from (in alphabetical order):

Matthew Silverman

Breaking changes

* `pennylane-rigetti` no longer supports `python3.7`. A newer python version is required.
[(121)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/121)

Improvements

* Build dependency specification is now solely in `requirements.txt`, which is read by `setup.py`.
[(120)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/120)

* Removed the use of in-place inversion for PennyLane operations.
[(122)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/122)

Bug fixes

* A missing comma has been added to the version bounds on `qcs-api-client`.
[(120)](https://github.com/PennyLaneAI/pennylane-rigetti/pull/120)

Contributors

This release contains contributions from (in alphabetical order):

Albert Mitjans Coma
Graham Enos
Mudit Pandey

New features since last release

Re-introduction of the Rigetti Quantum Proccessing Unit (QPU) device

This release uses the latest version of [pyQuil](https://github.com/rigetti/pyquil) to connect to [Rigetti Quantum Cloud Services (QCS)](https://docs.rigetti.com/qcs/) and enables the use of the latest [Rigetti QPUs](https://qcs.rigetti.com/qpus) as a PennyLane device. [#107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

Breaking changes

* The package has been renamed to `pennylane-rigetti`. The top level import is now `pennylane_rigetti`. In addition, the prefix for device short names have been changed to `rigetti`. For example, `rigetti.qpu`. [110](https://github.com/PennyLaneAI/pennylane-forest/pull/110)

* A new version of the QCS CLI is required if you want to use your QCS account to run your workloads on a live Rigetti QPU. See [Using the QCS CLI](https://docs.rigetti.com/qcs/guides/using-the-qcs-cli) for details. [#107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

* The `forest_url` parameter has been removed, as it is now managed by the QCS CLI. [107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

* The `compiler_url` and `qvm_url` device parameters have been removed. The default URLs can be overridden using the `QCS_SETTINGS_APPLICATIONS_PYQUIL_QUILC_URL` and `QCS_SETTINGS_APPLICATIONS_PYQUIL_QVM_URL` environment variables, respectively. [107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

* The `timeout` parameter for all devices has been renamed to `compiler_timeout`. [107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

* There is now a default execution timeout of 10 seconds. This can be configured for a device by using the new `execution_timeout` parameter. [107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

* The `S`, `T`, `CSWAP`, `ISWAP`, and `CCNOT` operations have been removed. Import them directly from `pennylane` instead.[107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

Improvements

* Improves the computation of the expectation value when using `QPUDevice` by skipping the `Device.generate_samples` method. [108](https://github.com/PennyLaneAI/pennylane-forest/pull/108)

Bug fixes

* The QPU device now correctly sets the number of shots when parametric compilation is disabled. [107](https://github.com/PennyLaneAI/pennylane-forest/pull/107)

Contributors

This release contains contributions from (in alphabetical order):

Albert Mitjans Coma, Antal Szava, Marquess Valdez.