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Quantum Cheque: Difference between revisions
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This scheme is proven to be impossible to counterfeit and impossible to repudiate. The quantum cheque is a quantum state and thus it cannot be copied or stolen by any eavesdropper, ensuring that only one copy of the quantum cheque exists. | This scheme is proven to be impossible to counterfeit and impossible to repudiate. The quantum cheque is a quantum state and thus it cannot be copied or stolen by any eavesdropper, ensuring that only one copy of the quantum cheque exists. | ||
== | ==Requirements== | ||
* Secure quantum channel to connect the branches of the bank to the main branch. | * Secure quantum channel to connect the branches of the bank to the main branch. | ||
* Secure quantum channel to connect the bank to the account holder and to connect any other third party to the bank. | * Secure quantum channel to connect the bank to the account holder and to connect any other third party to the bank. | ||
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* Private database for both account holder and bank. | * Private database for both account holder and bank. | ||
* Measurement devices for the account holder and the main branch of the bank. | * Measurement devices for the account holder and the main branch of the bank. | ||
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[[File:Quantum Cheque.png|center|Quantum Cheque]] | |||
==Properties== | ==Properties== | ||