Update datasets to use API

doc/introduction/data.rst

@@ -97,6 +97,36 @@ use them directly in a PennyLane circuits as follows:
 >>> print(circuit())
 -1.0791430411076344
 
+Viewing Available Dataset Names
+-------------------------------
+
+We can call the 
+:func:`~pennylane.data.list_data_names` function to get a snapshot of the names of the currently available datasets.
+This function returns a list of strings as shown below.
+
+>>> qml.data.list_data_names()
+["bars-and-stripes",
+ "downscaled-mnist",
+ "hamlib-max-3-sat",
+ "hamlib-maxcut",
+ "hamlib-travelling-salesperson-problem",
+ "hidden-manifold",
+ "hyperplanes",
+ "ketgpt",
+ "learning-dynamics-incoherently",
+ "linearly-separable",
+ "mnisq",
+ "mqt-bench",
+ "plus-minus",
+ "qchem",
+ "qspin",
+ "rydberggpt",
+ "two-curves"]
+
+Note that this example limits the results
+of the function calls for clarity and that as more data becomes available, the results of these
+function calls will change.
+
 Viewing Available Datasets
 --------------------------
 
@@ -161,8 +191,9 @@ Quantum Datasets Functions and Classes
 .. autosummary::
     :nosignatures:
 
-    ~pennylane.data.list_datasets
     ~pennylane.data.list_attributes
+    ~pennylane.data.list_data_names
+    ~pennylane.data.list_datasets
     ~pennylane.data.load
     ~pennylane.data.load_interactive
     ~pennylane.data.Dataset

doc/releases/changelog-dev.md

@@ -24,6 +24,59 @@
   [Haldane](https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.61.2015) models on a lattice.
   [(#6201)](https://github.com/PennyLaneAI/pennylane/pull/6201/)
 
+* A `has_sparse_matrix` property is added to `Operator` to indicate whether a sparse matrix is defined.
+  [(#6278)](https://github.com/PennyLaneAI/pennylane/pull/6278)
+  [(#6310)](https://github.com/PennyLaneAI/pennylane/pull/6310)
+
+<h3>Improvements 🛠</h3>
+
+* RTD support for `qml.labs` added to API.
+  [(#6397)](https://github.com/PennyLaneAI/pennylane/pull/6397)
+
+* Module-level sandboxing added to `qml.labs` via pre-commit hooks.
+  [(#6369)](https://github.com/PennyLaneAI/pennylane/pull/6369)
+
+* `qml.matrix` now works with empty objects (such as empty tapes, `QNode`s and quantum functions that do
+  not call operations, single operators with empty decompositions).
+  [(#6347)](https://github.com/PennyLaneAI/pennylane/pull/6347)
+
+* PennyLane is now compatible with NumPy 2.0.
+  [(#6061)](https://github.com/PennyLaneAI/pennylane/pull/6061)
+  [(#6258)](https://github.com/PennyLaneAI/pennylane/pull/6258)
+  [(#6342)](https://github.com/PennyLaneAI/pennylane/pull/6342)
+
+* PennyLane is now compatible with Jax 0.4.28.
+  [(#6255)](https://github.com/PennyLaneAI/pennylane/pull/6255)
+
+* `qml.qchem.excitations` now optionally returns fermionic operators.
+  [(#6171)](https://github.com/PennyLaneAI/pennylane/pull/6171)
+
+* The `diagonalize_measurements` transform now uses a more efficient method of diagonalization
+  when possible, based on the `pauli_rep` of the relevant observables.
+  [(#6113)](https://github.com/PennyLaneAI/pennylane/pull/6113/)
+
+* The `QuantumScript.copy` method now takes `operations`, `measurements`, `shots` and 
+  `trainable_params` as keyword arguments. If any of these are passed when copying a 
+  tape, the specified attributes will replace the copied attributes on the new tape.
+  [(#6285)](https://github.com/PennyLaneAI/pennylane/pull/6285)
+  [(#6363)](https://github.com/PennyLaneAI/pennylane/pull/6363)
+
+* Datasets are now downloaded via Dataset API.
+  [(#6126)](https://github.com/PennyLaneAI/pennylane/pull/6126)
+
+* The `Hermitian` operator now has a `compute_sparse_matrix` implementation.
+  [(#6225)](https://github.com/PennyLaneAI/pennylane/pull/6225)
+
+* All PL templates are now unit tested to ensure JIT compatibility.
+  [(#6309)](https://github.com/PennyLaneAI/pennylane/pull/6309)
+
+* `qml.QutritBasisStatePreparation` is now JIT compatible.
+  [(#6308)](https://github.com/PennyLaneAI/pennylane/pull/6308)
+
+* `qml.AmplitudeAmplification` is now compatible with QJIT.
+  [(#6306)](https://github.com/PennyLaneAI/pennylane/pull/6306)
+
+
 <h4>Calculating Polynomials 🔢</h4>
 
 <h4>Readout Noise 📠</h4>
@@ -426,6 +479,7 @@ Diksha Dhawan,
 Lillian M. A. Frederiksen,
 Pietropaolo Frisoni,
 Emiliano Godinez,
+Anthony Hayes,
 Austin Huang,
 Soran Jahangiri,
 Jacob Kitchen,

pennylane/data/__init__.py

@@ -37,6 +37,7 @@
     load
     load_interactive
     list_attributes
+    list_data_names
     list_datasets
 
 In addition, various dataset types are provided
@@ -207,16 +208,24 @@ class QuantumOscillator(qml.data.Dataset, data_name="quantum_oscillator", identi
     DatasetMolecule,
     DatasetNone,
     DatasetOperator,
+    DatasetPyTree,
     DatasetScalar,
     DatasetSparseArray,
     DatasetString,
     DatasetTuple,
-    DatasetPyTree,
 )
 from .base import DatasetNotWriteableError
 from .base.attribute import AttributeInfo, DatasetAttribute, attribute
 from .base.dataset import Dataset, field
-from .data_manager import DEFAULT, FULL, list_attributes, list_datasets, load, load_interactive
+from .data_manager import (
+    DEFAULT,
+    FULL,
+    list_attributes,
+    list_datasets,
+    list_data_names,
+    load,
+    load_interactive,
+)
 
 __all__ = (
     "AttributeInfo",
@@ -240,6 +249,7 @@ class QuantumOscillator(qml.data.Dataset, data_name="quantum_oscillator", identi
     "load",
     "load_interactive",
     "list_attributes",
+    "list_data_names",
     "list_datasets",
     "DEFAULT",
     "FULL",

pennylane/data/attributes/__init__.py

@@ -20,11 +20,11 @@
 from .molecule import DatasetMolecule
 from .none import DatasetNone
 from .operator import DatasetOperator
+from .pytree import DatasetPyTree
 from .scalar import DatasetScalar
 from .sparse_array import DatasetSparseArray
 from .string import DatasetString
 from .tuple import DatasetTuple
-from .pytree import DatasetPyTree
 
 __all__ = (
     "DatasetArray",