LCU tutorial

[MatP1337]

To-do:

• Describe LCU theoretically

  • embed this video about it: https://www.youtube.com/watch?v=irMKrOIrHP4

• dissect the LCU function

  • implement PREPARE
  • implement SELECT (qswitch)
  • implement PREPARE$^\dagger$
  • show entire code color coded like in the slides

• mention that it is possible to provide both lists of unitaries as well as unitaries as functions

  • unitaries as functions
  • unitaries as lists

• showcase the view_LCU to see underlying circuit

  • unitaries as functions
  • unitaries as lists

• cos(H) LCHS example

• READY TO RELEASE

Done 🎆🎇🎉🍾🥂📈

Separate tutorial!

• LCHS
  • Theoretical introduction
  • another example

[MatP1337]

Adding @renezander90 and @positr0nium as a safeguard to prevent merging the PR by mistake. The tutorial is still in its draft stages and a WIP so I kindly ask to hold on reviewing until further notice. ✌🏻