Introduction

Hi, these are my solutions to the QHack 2023 quantum machine learning hackathon.
Everything is coded in Xanadu's PennyLane quantum programming package.

Hackathon Details

Site: QHack.ai
Date: February 2023

Score

Here is a screenshot of my completed hackathon scoreboard entry.
I ranked 24^th in terms of cumulative completion time for the problem sets.

And here is accompanying certificate

Files

There are several challenges, each in the form of a self-contained .ipynb in the ipynb folder.
These challenges also have an overarching storyline, as introduced in coding_metastory.md, which flow from the notebook 1.1 to 1.2, 1.3, ..., 1.5, 2.1, ...
They are also html copies in the html folder.

Topics

0. Tutorial Challenges
   1. 0.1-It Adds Up-jupyter notebook
   2. 0.2-Affairs of State-Quantum States
   3. 0.3-A Shor Thing-Shor Code
   4. 0.4-Product Management-Product States
   5. 0.5-Hi, Hydrogen!-VQE: Variational Quantum Eigensolver
   6. 0.6-Hamiltonian Sandwich-Hamiltonians
   7. 0.7-Optimize This-Quantum Machine Learning
   8. 0.8-Stuck in the Middle with U-Mid-Circuit Measurements
1. Office Hijinks
   1. 1.1-Tick-Tock Bloch-Bloch Sphere
   2. 1.2-The Super Parameter-Expressibility of Circuit Ansatz
   3. 1.3-The Change of Qubit-Swapping States
   4. 1.4-The Lazy Colleague-Grover Search
   5. 1.5-The False Proof-Phases of Quantum States
2. Bending Bennett's Laws
   1. 2.1-Ctrl-Z-Quantum AND Gate
   2. 2.2-Sub-Superdense Coding-Superdense Coding
   3. 2.3 Secrets in Spacetime-Quantum Encrypthon
   4. 2.4-A Halfway-Decent Photocopier-Quantum Teleportation
   5. 2.5-The Itch to Switch-Quantum Teleportation
3. A Tale of Timbits
   1. 3.1-The Magic 5-Ball-Bernstein-Vazirani Algorithm
   2. 3.2-Cascadar-Tiffoli Gates
   3. 3.3-A Pauli-Worded Problem-Noise, Trace Distance
   4. 3.4-Entangled Robot Swarms-Quantum Teleporation
   5. 3.5-One-Bit Wonder-Timbits, Boolean Satisfiability Problem
4. Fall of Sqynet
   1. 4.1-SqyTrotter-Trotterisation
   2. 4.2-Unitary Operators and Beyond-Sum of Unitaries
   3. 4.3-Don't Hit the Ground-Noise Modelling
   4. 4.4-Desperate Measures-Trotter Ising Model
   5. 4.5-Ising Uprising-VQE Ising Model