#import "@preview/classy-tudelft-thesis:0.1.0": *
#import "@preview/physica:0.9.6": *
#import "@preview/unify:0.7.1": num, numrange, qty, qtyrange
#import "@preview/zero:0.5.0"

= Theory

This section explains the concepts necessary to understand the goal.
We start by explaining what Quantum Architecture Search is about,
followed by an explanation of various proxies used in the implemented search, namely Expressivity and Entanglement

== Quantum Architecture Search

The act of finding the best parametrized quantum circuit to optimize for a specific quantum computer and task.
In our case I will be talking about "Optimization-Free" QAS as well, which indicates that the parameters of the
circuits aren't optimized during the search process.
A consequence of this limitation are task agnostic results like the task agnostic nature of the Hardware Efficient Ansatze as described by Kandala@hea-kandala.

== Expressivity

== Entanglement