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Understanding Quantum Computers

Keio University via FutureLearn


Get an introduction to the key concepts of quantum computing

In this course, we will discuss the motivation for building quantum computers, cover the important principles in quantum computing, and take a look at some of the important quantum computing algorithms.

We will finish with a brief look at quantum computing hardware and the budding quantum information technology industry.

Key concepts will be explained graphically, with minimal mathematics but some deep thinking required.

[* Note in Japanese] 本コースでは、ビデオの日本語字幕および全テキストの日本語PDFが提供されています。
[* Note in Thai] คอร์สนี้มีคำบรรยายวิดีโอภาษาไทยและคำอธิบายเพิ่มเติมภาษาไทยในรูปแบบ PDF ประกอบ
[* Note in Indonesian] Kursus ini menyediakan teks terjemahan Bahasa Indonesia untuk video dan berkas PDF.

The Japanese version of this course is available.

Anyone interested in quantum computing at the “popular science” level.

High school students, college students, and computer professionals interested in developing a qualitative understanding of quantum computing in order to understand the future of computing will benefit.

We recommend that you be comfortable with exponents, vectors, sine waves and the basic concepts of probability. There are some equations, but we have endeavored to keep them as few and clear as possible.

While the mathematics is not too hard, some concepts will be new to most learners, and require some mental stretching. Be prepared to exercise your brain!




  • Wanting Quantum
    • Introduction
    • Motivation
    • Benefits
    • Waves
    • Summary of Week 1
  • Being Quantum
    • Introduction of Week 2
    • Qubits
    • Entanglement
    • Basic Algorithmic Idea
    • State Variables
    • Summary of Week 2
  • Doing Quantum
    • Introduction of Week 3
    • Grover's Algorithm
    • Background for Shor
    • The Classical Parts of Shor
    • Peter Shor's Algorithm for Factoring Large Numbers
    • Other Algorithms
    • Summary of Week 3
  • Building Quantum
    • Introduction of Week 4
    • Hardware
    • Quantum Error Correction
    • The Quantum Information Technology Industry
    • Summary of The Course

Taught by

Rodney Van Meter



4.7 rating at FutureLearn based on 61 ratings

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