QUANTUM SUPREMACY

A renowned physicist explains the mind-blowing potential of quantum computing.

Translating complicated scientific concepts into language that lay readers can understand is an art. Kaku, a professor of physics at the City University of New York, is one of the best practitioners. He has written numerous books on advanced science, technology, and mathematics, including Parallel Worlds, Physics of the Future, and The God Equation. In his latest, the author delves into the emerging field of quantum computing, which certainly could “change everything.” As he writes, “quantum computers can tackle problems that digital computers can never solve, even with an infinite amount of time.” The key is that quantum computers utilize atoms arranged in precise patterns to vibrate in unison instead of using chips or transistors. Kaku examines the underlying physics of quantum mechanics, encountering a variety of colorful figures and scientific disputes along the way. Integrating these principles into functional computer systems was enormously difficult, but the project eventually came together. In the past few years, tech companies have poured billions of dollars into research and development. The first generation of quantum computers is here, and one of the leading companies, IBM, even provides public access through the internet. At present, quantum computers require massive cooling systems and superstable environments, but further research might address these problems to make them more widely available. Kaku examines how quantum computing could profoundly affect biotechnology, medicine, energy, food production, and environmental modelling—virtually every aspect of human activity. One problem, however, is that quantum computing could render every computer security measure effectively obsolete. The author pauses occasionally to provide summaries, which is important given the inherent complexity of the subject. As always, Kaku’s enthusiasm is contagious, and this latest book is an important guide to a crucial part of the tech future.

An informative and highly entertaining read about the computing revolution already underway.