A guide to how quantum computing, qubits, and "quantum algorithms" work, the biggest challenges, government involvement, and potential for hacking, or "Q-day" (Financial Times)

Financial Times:
A guide to how quantum computing, qubits, and “quantum algorithms” work, the biggest challenges, government involvement, and potential for hacking, or “Q-day”  —  The next generation of quantum computers will open a new world of possibilities, but also pose enormous risks to our online security