Differentiable pulse programming with qubits in PennyLane (#686)

* 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]>

* vqe example

* introduction

* main body first draft with some gaps

* from qml to quantum computing

* small updates

* update hyper parameters and example

* bug fix

* update zstd dill in requirements

* HF state

* compare to right energy

* basis state instead of QubitStateVector

* update hamiltonian and do 100 epochs

* back to H2, resulting energy below exact energy

* back to H2, resulting energy below exact energy

* no restriction to 20MHz

* remove 2 pi

* bug fix on non-hermitian drive hamiltonian, clip envelope - no optimization possible

* alternative normalization option (also does not work

* look at mean gradient in iterations

* amplitude modulation

* hyper parameter update, still not great, best I could get so far

* move to tapered HeH+, reaches gs energy

* stronger penalty term, more realistic amplitudes

* Apply suggestions from code review

Co-authored-by: David Wierichs <[email protected]>
Co-authored-by: lillian542 <[email protected]>
Co-authored-by: Tom Bromley <[email protected]>

* hyper parameters

* umlaute ftw

* switched back to f1(p, t): return polzval(p, t) because it is more explicit and understandable

* update drawing to instance specifics

* naming drive field and comment about parameter length

* specify cost function

* placeholder comment about resulting curve

* update bio

* update bio

* tight layout

* Update demonstrations/tutorial_pulse_programming101.py

Co-authored-by: David Wierichs <[email protected]>

* plot label changes

* latex matplotlib fix

* reference jax docs on jitting

* official pwc

* sentence about amplitude

* commit about fix ts

* refernce typo

* add pulse example

* move convenience function part just above gradients

* bug fix

* nice result with clip and pwc and realistic values

* update text

* update text

* conclusion

* adabelief

* paper titles in quotation marks

* anharmonic resolved

* absolute of mean gradient

* review comment

* review comment label in pulse plot

* review comment qc overview page

* Apply suggestions from code review

Co-authored-by: David Wierichs <[email protected]>

* move convenience after gradient, change pwc example to different shapes

* merging sections

* tapering comment and realistic physical system

* comment about canceling exponents GHz and ns

* bug fix local run

* abstract, num rename to shape

* shapes in text

* update optimizer and learning rate remark

* minus sign in anharmonicity definition

* Apply suggestions from code review

Co-authored-by: Tom Bromley <[email protected]>

* missing plot label

* evolve link :func:

* black

* print energy difference

* rerun

* revert changes

* rerun

* retrigger

* Update demonstrations/tutorial_pulse_programming101.py

Co-authored-by: lillian542 <[email protected]>

* add see-also section for VQE

* also add pulse module reference

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

* use pyscf for openshell H3

* change date and fix interface warning

* enable float64

* update

* small update

* 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]>

* add demo illustration

* add to main text

* added abstract sentence to relate to picture and moved reference to VQE tutorial to VQE section

* 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]>

* Apply suggestions from code review

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

* add polyval comment

* add link to each qc system

* comment about parameter order and calling parametrized Hamiltonians

* driving field -> control field

* code review suggestion

* comment about objective hamiltonian

* further comment about objective hamiltonian

* clean up the messy pwc section

* add toctree

* comment about wrapper function

* small things

* small fixes

* PULSE DEMO 2.0 - physics bam!

* update text according to version 2.0

* typo

* Apply suggestions from code review

Co-authored-by: Alvaro Ballon <[email protected]>

* add vqe reference in abstract

* hook in the abstract

* interaction picture confusion

* p_i explicitly

* update plot title fig 1

* change bib order

* cross resonance comment

* commit about explicit functional form

* commit about explicit functional form

* small typos

* re-trigger

* fix v0.29.1

* Update demonstrations/tutorial_pulse_programming101.py

---------

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: David Wierichs <[email protected]>
Co-authored-by: lillian542 <[email protected]>
Co-authored-by: Tom Bromley <[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: trbromley <[email protected]>
Co-authored-by: Guillermo Alonso-Linaje <[email protected]>
Co-authored-by: Alvaro Ballon <[email protected]>

_static/authors/korbinian_kottmann.txt

@@ -1,4 +1,4 @@
 .. bio:: Korbinian Kottmann
    :photo: ../_static/authors/korbinian_kottmann.jpg
 
-   Korbinian is a summer resident at Xanadu, interested in quantum simulation and quantum software.
+   Korbinian is a Quantum Scientist at Xanadu, interested in quantum simulation and quantum software.