Leo DiCarlo is Associate Professor and roadmap leader of the fault-tolerant computing roadmap at QuTech, Delft University of Technology. Leo develops superconducting quantum circuits with the goal of realizing a large-scale quantum computer. One of his ambitions is to realize full fault-tolerant quantum computing using the surface code, spanning from superconducting quantum hardware, through control electronics, to the complete software stack. This is a great challenge blurring the line between traditional condensed-matter physics and electrical engineering. Leo holds a double major in physics and electrical engineering from Stanford University (1999), a Master’s in electrical engineering also from Stanford (2000), and a PhD in mesoscopic physics from Harvard University (2008). Leo’s focus evolved from semi to superconducting electronic systems during his post-doc in applied physics at Yale University (2008-2010). Highlights from this period include the first solid-state quantum processors executing quantum algorithms, generating three-qubit entanglement and performing basic quantum error correction.