Book Image

A Practical Guide to Quantum Machine Learning and Quantum Optimization

By : Elías F. Combarro, Samuel González-Castillo
4.5 (2)
Book Image

A Practical Guide to Quantum Machine Learning and Quantum Optimization

4.5 (2)
By: Elías F. Combarro, Samuel González-Castillo

Overview of this book

This book provides deep coverage of modern quantum algorithms that can be used to solve real-world problems. You’ll be introduced to quantum computing using a hands-on approach with minimal prerequisites. You’ll discover many algorithms, tools, and methods to model optimization problems with the QUBO and Ising formalisms, and you will find out how to solve optimization problems with quantum annealing, QAOA, Grover Adaptive Search (GAS), and VQE. This book also shows you how to train quantum machine learning models, such as quantum support vector machines, quantum neural networks, and quantum generative adversarial networks. The book takes a straightforward path to help you learn about quantum algorithms, illustrating them with code that’s ready to be run on quantum simulators and actual quantum computers. You’ll also learn how to utilize programming frameworks such as IBM’s Qiskit, Xanadu’s PennyLane, and D-Wave’s Leap. Through reading this book, you will not only build a solid foundation of the fundamentals of quantum computing, but you will also become familiar with a wide variety of modern quantum algorithms. Moreover, this book will give you the programming skills that will enable you to start applying quantum methods to solve practical problems right away.
Table of Contents (27 chapters)
1
Part I: I, for One, Welcome our New Quantum Overlords
4
Part II: When Time is Gold: Tools for Quantum Optimization
10
Part III: A Match Made in Heaven: Quantum Machine Learning
16
Part IV: Afterword and Appendices
17
Chapter 13: Afterword: The Future of Quantum Computing
19
Bibliography
20
Index
Appendix A: Complex Numbers
Appendix E: Production Notes

Chapter 11
The Best of Both Worlds: Hybrid Architectures

Unity makes strength.
— English aphorism

By now, we have a solid understanding of both classical and quantum neural networks. In this chapter, we will leverage this knowledge to explore an interesting kind of model: hybrid architectures of quantum neural networks.

In this chapter, we will discuss what these models are and how they can be useful, and we will also learn how to implement and train them with PennyLane and Qiskit. The whole chapter is going to be very hands-on, and we will also take the time to fill in some gaps regarding the actual practice of training models in real-world scenarios. In addition to this — and just to spice things up a bit — we will go beyond our usual binary classifiers and also consider other kinds of problems.

We’ll cover the following topics in this chapter:

  • The what and why of hybrid architectures

  • Hybrid architectures in PennyLane (with a brief overview of best practices...