Book Image

Quantum Computing in Practice with Qiskit® and IBM Quantum Experience®

By : Hassi Norlen
5 (1)
Book Image

Quantum Computing in Practice with Qiskit® and IBM Quantum Experience®

5 (1)
By: Hassi Norlen

Overview of this book

IBM Quantum Experience® is a leading platform for programming quantum computers and implementing quantum solutions directly on the cloud. This book will help you get up to speed with programming quantum computers and provide solutions to the most common problems and challenges. You’ll start with a high-level overview of IBM Quantum Experience® and Qiskit®, where you will perform the installation while writing some basic quantum programs. This introduction puts less emphasis on the theoretical framework and more emphasis on recent developments such as Shor’s algorithm and Grover’s algorithm. Next, you’ll delve into Qiskit®, a quantum information science toolkit, and its constituent packages such as Terra, Aer, Ignis, and Aqua. You’ll cover these packages in detail, exploring their benefits and use cases. Later, you’ll discover various quantum gates that Qiskit® offers and even deconstruct a quantum program with their help, before going on to compare Noisy Intermediate-Scale Quantum (NISQ) and Universal Fault-Tolerant quantum computing using simulators and actual hardware. Finally, you’ll explore quantum algorithms and understand how they differ from classical algorithms, along with learning how to use pre-packaged algorithms in Qiskit® Aqua. By the end of this quantum computing book, you’ll be able to build and execute your own quantum programs using IBM Quantum Experience® and Qiskit® with Python.
Table of Contents (12 chapters)

Building quantum scores with Circuit Composer

This recipe will walk you through the basic steps of creating a quantum score in IBM Quantum Experience®, to get a feel for how the composer works, how to build and modify a score, and finally how to analyze the score step by step using the Inspect feature.

Drag-and-drop programming

The recipes in this chapter will be run in the IBM Quantum Experience® web environment, using the drag-and-drop interface, which nicely visualizes what you are doing in an intuitive way.

How to do it...

Let's build ourselves a little quantum score:

  1. From your web browser (Chrome seems to work best), go to the following URL, and then log in with your IBM Quantum Experience® account:
  2. In the left pane, select Circuit Composer.

    This opens the composer to a blank Untitled circuit.

  3. Optional: Set the number of qubits to play with.

    In the default setting, you will see three lines, much...