Recorded live in Geneva at the AI for Good Summit!

Welcome to a very special episode of The Quantum Kid!!

Kai sits down with Rebecca Krauthamer, CEO and co-founder of QuSecure, to tackle one of the biggest questions in tech today: what happens to our digital privacy when powerful quantum computers arrive? (Quantum explained like I’m 10!)

The ultimate Best of The Quantum Kid — featuring the biggest quantum questions, the world’s leading scientists, and some of our most mind-expanding conversations and adventures.

Quantum explained like I’m 10.

In this special compilation, Kai meets some of the biggest names in quantum science and technology, the ANYbotics robot dog.

We also travel around the world to explore quantum labs, fusion, astronomy, bioprinting, climate science and more — from Japan and Chile to Easter Island.

Can quantum be explained through art instead of equations? Award-winning filmmaker Mark Levinson (Particle Fever, The Universe in a Grain of Sand) joins Roger Highfield from the Science Museum Group to answer Kai’s biggest questions!

Together, they explore one of the biggest challenges in science: how do you explain quantum ideas to the next generation? The conversation ranges from CERN and Particle Fever to Mark’s latest film, The Universe in a Grain of Sand, which uses art, experimental cinema and stunning visuals to make some of the strangest ideas in physics more accessible. Along the way, Kai shares his own interpretations of superposition and entanglement, leading to a fascinating discussion about whether children may sometimes be better prepared for quantum thinking than adults. This episode celebrates one year of The Quantum Kid and Kai’s journey from age nine to ten, proving that some of the biggest questions in science can start with a child’s curiosity.

Why do kids learn Quantum Computing faster than adults? Nobel Prize winner John Martinis (2025 Nobel Prize in Physics) and Elisa Torres Durney (Founder of Girls in Quantum) join Kai to discuss why the traditional way of teaching physics is holding students back.

In this episode of The Quantum Kid, we explore why children have a natural advantage in learning non-intuitive concepts like superposition and entanglement before they are “taught” that physics is hard. John also shares essential advice for parents on how to expose kids to science through curiosity, building, and asking the right questions.

Can quantum computing help unlock fusion energy on Earth?
Kai visits a tokamak – to find out!

First, though, he goes to Chile, to the Atacama Desert, where amongst cacti and lamas, two remarkable observatories explore the wonders of the Universe.

Back in the studio, MIT physicist Peter Fisher explains why fusion is so difficult, especially when it comes to simulating plasma, where vast numbers of particles interact at extreme speeds. Today’s classical computers struggle with this complexity. This is where quantum computing comes in. Quantum systems could simulate plasma in fundamentally new ways, helping scientists better understand and control fusion reactions. Researchers are already beginning to explore this connection, combining quantum simulations with traditional methods.

CERN is preparing one of the biggest upgrades in its history. The Large Hadron Collider is about to increase collision density dramatically — stronger magnets (moving toward 12 Tesla), far more particle interactions, and an explosion in data. The High-Luminosity era will push computing infrastructure to its limits. So 9-year-old Kai went to CERN to ask a direct question: If nature is quantum – and the data is growing beyond anything we’ve handled before – could quantum computers help? Inside CMS, 100 metres underground, protons collide every 25 nanoseconds. Millions of detector channels record events at microscopic precision. Physicists simulate quantum field theory on classical machines — and know exactly where approximations start to strain. This episode covers serious scientific questions emerging from the next phase of high-energy physics.