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)

Tossing a quantum coin

One of the examples I use is what is arguably the simplest useful quantum program that you can build: a simulated coin toss.

We will go into more detail about the quantum coin toss in Chapter 4, Starting at the Ground Level with Terra, but I will use that program as an example here. It is very small, and not too complicated to understand.

As we discussed briefly in Chapter 2, Quantum Computing and Qubits with Python, a quantum computer, in contrast to a classical computer, provides you with probabilistic, or randomized, computation. In this case, we set up our qubit as a superposition that results in probabilities to get an outcome of 0 or 1, or heads or tails in coin toss nomenclature, when we measure the qubit.

How to do it...

Build the quantum circuit and then run it. This is the circuit we will come back to later in the book, on the Qiskit® side of things:

  1. Log in to IBM Quantum Experience® at https://quantum-computing.ibm...