Introduce Specialunitary and use in VQE workflow (#689)

* Development branch

* Bumped requirement package versions (#667)

* Bumped jax versions

* Updated neural-tangents

* Merge dev in master following v0.28.0 release of PennyLane (#671) (#672)

* Development branch

* Bumped requirement package versions (#667)

* Bumped jax versions

* Updated neural-tangents

* Apply suggestions from code review

Co-authored-by: Josh Izaac <[email protected]>
Co-authored-by: GitHub Nightly Merge Action <[email protected]>
Co-authored-by: Rashid N H M <[email protected]>

Co-authored-by: Jay Soni <[email protected]>
Co-authored-by: Josh Izaac <[email protected]>
Co-authored-by: GitHub Nightly Merge Action <[email protected]>

* add demo, v0.1

* update demo with shots optimization

* improvements to text, remove notes, draw circuit.

* black

* remove qml.optimize dependency

* update, improve code

* Update chemical reactions demo to use pyscf for openshell H3 (#704)

* use pyscf for openshell H3

* change date and fix interface warning

* Change ibm device in Quantum volume (#703)

* Ibm oslo

* Update to new hardware

* Change to Lima

* Typo

* Replace

* One below

* Update demos to remove warnings (#705)

* Added interface, removed deprecated functionality

* Addressing PR comments

---------

Co-authored-by: Romain Moyard <[email protected]>

* tmp

* Update classical shadows (#708)

* More

* typo

* Trigger CI

* lightning req no depth

* Trigger CI

* Update SPSA demo to count circuit executions manually. (#706)

* new version of SPSA demo

* Update demonstrations/spsa.py

Co-authored-by: Josh Izaac <[email protected]>

* simplify code, update outputs and figures

* Apply suggestions from code review

Co-authored-by: Romain Moyard <[email protected]>

* review and tweaking

* make spsa an executing tutorial

* move file

* fix links

* fix some more links

* author bio

* line breaks, undo link change, fixing them actually

* links...

* links again... bio

* update to count executions manually

* reword device executions -> circuit executions. avoid recreating device and qnode

* print executions

---------

Co-authored-by: Josh Izaac <[email protected]>
Co-authored-by: Romain Moyard <[email protected]>

* large update, include gradient evaluation discussion

* some jax

* add paper plot

* images

* black

* tmp

* add thumbnail

* change to png

* black

* uncomment. improve line breaks/naming

* hist colors

* update figure and size

* colors, text

* formulation around sampled_grad plot

* new image

* png

* links

* cosmetics

* cosmetics

* new figures

* increase embedded image sizes

* update intro

* optimization curve image

* review

* Apply suggestions from code review

Co-authored-by: Guillermo Alonso-Linaje <[email protected]>

* debugging, intro teaser

* Apply suggestions from code review

Co-authored-by: Guillermo Alonso-Linaje <[email protected]>

* review

* new thumbnail

* Apply suggestions from code review

Co-authored-by: Isaac De Vlugt <[email protected]>

* finalizing review

* whitespace

* update date to 30th, incl preprint number, add reference in intro

* change date to 3rd of April

* fix links

* Apply suggestions from code review

* Update tutorial_here_comes_the_sun.py

* change to first position

---------

Co-authored-by: Josh Izaac <[email protected]>
Co-authored-by: GitHub Nightly Merge Action <[email protected]>
Co-authored-by: Rashid N H M <[email protected]>
Co-authored-by: Jay Soni <[email protected]>
Co-authored-by: soranjh <[email protected]>
Co-authored-by: Romain Moyard <[email protected]>
Co-authored-by: Mudit Pandey <[email protected]>
Co-authored-by: Guillermo Alonso-Linaje <[email protected]>
Co-authored-by: Isaac De Vlugt <[email protected]>
Co-authored-by: Nathan Killoran <[email protected]>

demonstrations/tutorial_stochastic_parameter_shift.py

@@ -393,7 +393,7 @@ def spsr_circuit(gate_pars, s=None, sign=+1):
 #
 #     Leonardo Banchi and Gavin E. Crooks. "Measuring Analytic Gradients of
 #     General Quantum Evolution with the Stochastic Parameter Shift Rule."
-#     `arXiv:2005.10299 <https://arxiv.org/abs/2005.10299>`__ (2020).
+#     `Quantum **5** 386 <https://quantum-journal.org/papers/q-2021-01-25-386/>`__ (2021).
 #
 # .. [#li2016]
 #
@@ -416,4 +416,4 @@ def spsr_circuit(gate_pars, s=None, sign=+1):
 #
 # About the author
 # ----------------
-# .. include:: ../_static/authors/nathan_killoran.txt
+# .. include:: ../_static/authors/nathan_killoran.txt

demos_optimization.rst

@@ -19,6 +19,12 @@ in quantum neural networks.
 
 :html:`<div class="gallery-grid row">`
 
+.. gallery-item::
+    :tooltip: Construct and optimize circuits with SU(N) gates
+    :figure: demonstrations/here_comes_the_sun/thumbnail_tutorial_here_comes_the_sun.png
+    :description: :doc:`demos/tutorial_here_comes_the_sun`
+    :tags: quantumcomputing circuitdesign
+
 .. gallery-item::
     :tooltip: Learn how to implement QAOA workflows with PennyLane
     :figure: demonstrations/qaoa_module/qaoa_layer.png
@@ -175,7 +181,7 @@ in quantum neural networks.
     demos/tutorial_vqe_qng
     demos/tutorial_barren_plateaus
     demos/tutorial_local_cost_functions
-    demos/spsa
+    demos/tutorial_spsa
     demos/tutorial_general_parshift
     demos/tutorial_doubly_stochastic
     demos/tutorial_stochastic_parameter_shift
@@ -194,3 +200,5 @@ in quantum neural networks.
     demos/tutorial_diffable-mitigation
     demos/tutorial_implicit_diff_susceptibility
     demos/tutorial_barren_gadgets
+    demos/tutorial_here_comes_the_sun
+