Endless Fun in high dimensions - a card game to program a high-dimensional quantum computer

Idea of the card game

Build your own high-dimensional quantum computer. By applying quantum logic operations to high-dimensional quantum bits – so-called qudits -, you can change their values. Try to reach the highest possible value on your qudit, while keeping the other player’s qudit as low as possible. The game offers three modes of playing - easy, 2D, and 3D - with increasing complexity. The evaluation software calculates the state whenever a played card is entered. It then calculates the final state after each round, in which a certain number of measurements will project possible complex superposition states into a final value. The player with the highest qudit values in three rounds wins the game.

In addition, there are a few riddle cards (incl. solutions on the back side) that can be solved by single players.

See instructions for a detailed description of the game.

Please also have a look at the manuscript detailing the ideas behind the game and how quantum effects such as superposition, interference, and entanglement can be observed when playing.

The preprint version of the manuscript can be found here: https://arxiv.org/abs/2107.12007

The upload contains:

• instructions
• pdf-file to print the cards
• pdf-file to print the riddle cards
• program to evaluate the outcome of the game (python code as well as executable application)

NOTE: The general idea is strongly based on the great card game Q|Cards> by Oskari Kerppo, Jorden Senior, Sabrina Maniscallo, Guillermo Garcia-Perez, Samuli Jääskeläinen, Sylvia Smatanova, Krista Erkkilä, Elie Abraham, which is a very similar game using only qubits. It can be found here: https://zhamul.itch.io/qcards