From CPUs to QPUs: A Software Engineer’s Guide to Quantum Computing

Quantum computing is attracting enormous interest lately, but for most software engineers, it remains abstract, physics-heavy, and difficult to connect to everyday development work. This talk takes a different approach. Instead of repeating familiar sound bites about what qubits are and what superposition means, we will map quantum computing concepts onto the abstraction layers we already understand from classical systems. We will compare the state of quantum computing today to the early development of classical computing during the twentieth century. We will also examine what a QPU actually is, how it is fundamentally different from a CPU, and why quantum computers are not simply faster versions of the machines we already use. Finally, we will look at the classes of problems where quantum computing has genuine theoretical or practical promise. Attendees will leave with a clear mental framework for reasoning about quantum computing from the perspective of software engineers: understanding what it is, what it is not, and how it may eventually integrate into real-world systems.