The Quantum Spy

“The Quantum Spy takes us to a whole new level of intrigue and espionage. It’s also unbelievably timely. In short: David Ignatius knows his stuff.” —Wolf Blitzer A hyper-fast quantum computer is the digital equivalent of a nuclear bomb; whoever possesses one will be able to shred any encryption and break any code in existence. The question is: who will build one first, the U.S. or China? In this gripping thriller, U.S. quantum research labs are compromised by a suspected Chinese informant, inciting a mole hunt of history-altering proportions. CIA officer Harris Chang leads the charge, pursuing his target from Singapore to Mexico and beyond. Do the leaks expose real secrets, or are they false trails meant to deceive the Chinese? The answer forces Chang to question everything he thought he knew about loyalty, morality, and the primacy of truth.

Who will rule the world? A nail-biting technothriller from a bestselling master A quantum computer is the digital equivalent of a nuclear bomb; whoever possesses one will be able to attain global dominance. The question is, who will get there first? A top-secret quantum research lab is compromised by a suspected Chinese informant. CIA officer Harris Chang leads the mole hunt, pursuing his target from the towering cityscape of Singapore to the mountains of Mexico and beyond. The investigation is obsessive, destructive, and uncertain... In order to win, Chang must question everything he knows. Grounded in a real-world technological arms race, The Quantum Spy presents a sophisticated game of cat and mouse cloaked in an exhilarating and visionary thriller. Perfect for fans of Tom Clancy, Stephen Coonts and David Baldacci.

A New York Times Bestseller. “If you think cybercrime and potential worldwide banking meltdown is a fiction, read this sensational thriller.”—Bob Woodward, Politico Graham Weber has been the director of the CIA for less than a week when a Swiss kid in a dirty T-shirt walks into the American consulate in Hamburg and says the agency has been hacked, and he has a list of agents' names to prove it. This is the moment a CIA director most dreads. Like the new world of cyber-espionage from which it's drawn, The Director is a maze of double dealing, about a world where everything is written in zeroes and ones—and nothing can be trusted.

A "superlative spy novel" (New York Times) by the author of the bestselling espionage thrillers Body of Lies and The Director. Agents of Innocence is the book that established David Ignatius's reputation as a master of the novel of contemporary espionage. Into the treacherous world of shifting alliances and arcane subterfuge comes idealistic CIA man Tom Rogers. Posted in Beirut to penetrate the PLO and recruit a high-level operative, he soon learns the heavy price of innocence in a time and place that has no use for it.

"You emerge from its pages as if from a top-level security briefing—confident that you have been let in on the deepest secrets." —Washington Post Someone in Pakistan is killing the members of a new CIA unit trying to buy peace with America’s enemies. It falls to Sophie Marx, a young officer with a big chip on her shoulder, to figure out who’s doing the killing and why. Unfortunately for Sophie, nothing is quite what it seems. This is a theater of violence and revenge, in which the last act is one that Sophie could not have imagined.

A subtle and masterful novel from a prescient voice on the cutting edge of spy literature.

Quantum computers are poised to kick-start a new computing revolution—and you can join in right away. If you’re in software engineering, computer graphics, data science, or just an intrigued computerphile, this book provides a hands-on programmer’s guide to understanding quantum computing. Rather than labor through math and theory, you’ll work directly with examples that demonstrate this technology’s unique capabilities. Quantum computing specialists Eric Johnston, Nic Harrigan, and Mercedes Gimeno-Segovia show you how to build the skills, tools, and intuition required to write quantum programs at the center of applications. You’ll understand what quantum computers can do and learn how to identify the types of problems they can solve. This book includes three multichapter sections: Programming for a QPU—Explore core concepts for programming quantum processing units, including how to describe and manipulate qubits and how to perform quantum teleportation. QPU Primitives—Learn algorithmic primitives and techniques, including amplitude amplification, the Quantum Fourier Transform, and phase estimation. QPU Applications—Investigate how QPU primitives are used to build existing applications, including quantum search techniques and Shor’s factoring algorithm.