What’s happened to the world’s kittens?!

They’ve disappeared! Who can save them?
Have no fear... the Quantum Cats are here!

Classy Digger

The Quantum Cats are on a mission to rescue the kittens. But we need your help! Using the weird and spooky laws of quantum mechanics, help the Quantum Cats save the kittens.

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WHO ARE Quantum Cats?



A classic cat. She acts like you would expect – you know where she’s going and where she’s been. She follows the laws of Newton and Galileo.



You never know if Schrö is in the box or if he’s not. He has the ability to be in multiple states at the same time. He could be here, he could be there or both!



Watch this cat! He will suddenly appear on the other side of a barrier, even when he doesn’t have the energy to go over it or break it down.



You are never certain where you’ll find this cat. There’s a fundamental limit on how much information you can know about her.


Quantum mechanics

Quantum mechanics describes our universe at its most fundamental level. It’s only when you look at the tiniest quantum particles – such as atoms, electrons, photons – that you see intriguing behaviours that are radically different than what we experience in our daily lives. Harnessing the power of quantum mechanics will transform the way we live, work and communicate.


Heisenberg’s uncertainty principle says that there is a fundamental limit on how much information one can know about a quantum system.


A quantum system in superposition means that it can be in multiple states at the same time – “here” and “there” or “up” and “down” and any combination in between.

Quantum tunnelling

The wave-like behaviour of quantum particles allows them to appear on the other side of a barrier, even if the particles don’t have the energy to go over it or break it down.


Quantum technologies are emerging from research labs faster and faster. From highly secure communications to ultra-sensitive devices to powerful quantum computers, these technologies are going to transform how we live, work and play. We here at the Institute for Quantum Computing (IQC) want to help people become familiar with the science behind these quantum technologies. 

Quantum Cats shares the wonder of the quantum world in a new and unique way - through a game. In partnership with the University of Waterloo Games Institute, IQC has created a game that highlights a few of the quantum behaviours that Einstein called 'weird' and 'spooky'.


ABOUT the Institute for Quantum Computing

The Institute for Quantum Computing (IQC) is a world-class research centre in quantum information science and technology at the University of Waterloo. Top experimentalists and theorists are making powerful new advances at IQC, deepening our understanding of quantum information and accelerating the development of quantum technology with application from quantum computing to quantum sensors, unbreakable cryptography to new quantum materials.

Since its founding in 2002, IQC has become an engine driving the creation of quantum information science and technology. IQC is sparking commercialization initiatives that will benefit society for generations to come, transforming the way we work, live and play, and establishing Waterloo as Canada’s Quantum Valley.


THANK YOU to our supporters

Game Development

  • Conceptualization and Design

    James Wallace — Faculty, UW School of Public Health and Health Systems
    Victor Cheung — PhD, Systems Design Engineering
  • Programming

    Mike Brown — Independent
    Jagger Nast — BMath, UW Applied Mathematics
  • Art

    Keith McLean — Independent

IQC Contributors

  • Juan Miguel Arrazola
  • Tobi Day-Hamilton
  • John Donohue
  • Carolyn Earnest
  • Kent Fisher
  • Aimee Gunther
  • Sarah Kaiser
  • Martin Laforest
  • Jean-Philippe MacLean
  • Mike Mazurek
  • Thomas McConkey
  • Angela Olano
  • Christopher Pugh
  • Jeff Salvail
  • Jodi Szimanski