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Quantum money that uses the mathematics of knots could be unforgeable

admin by admin
January 7, 2023
in Science News


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

Quantum money would live on quantum computers

Nerthuz / Alamy Stock Photo

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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Tags: quantum computing
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