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Sunday, January 15, 2023

Knotted Quantum Money

Intriguing application here.

Quantum money that uses the mathematics of knots could be unforgeable

A monetary system built using a combination of quantum computers and the mathematics of knots could be impossible to counterfeit

PHYSICS 7 January 2023   By Karmela Padavic-Callaghan  in New Scientist

Quantum money would live on quantum computers

Quantum money underpinned by the mathematics of knots could be impossible to forge.

In a quantum monetary system, money is represented as a collection of quantum bits – qubits – on a quantum computer. There is a secret procedure for creating the money that only the authority in charge, such as a mint, can perform. And copying the quantum money is impossible thanks to a law of physics called the no-cloning theorem. Effectively, if someone learned enough information about the quantum money to duplicate … '

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