Wiesner Quantum Money: Difference between revisions

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==Outline==
==Outline==
Let the money have <math>n</math> isolated systems <math>S_i\in\{a, b, \alpha, \beta\}, i=1,...,n</math>.  
Let the money have <math>n</math> isolated systems <math>S_i\in\{a, b, \alpha, \beta\}, i=1,...,n</math>.  
* The Mint creates two random binary sequences of twenty digits <math>M_i,N_i\in\{0,1\}</math> where <math>i=1,...,n</math>. Then, two-state systems are placed in one of four states <math>a, b, \alpha, \beta</math>.  
* The Mint creates two random binary sequences of <math>n</math>  digits <math>M_i,N_i\in\{0,1\}</math> where <math>i=1,...,n</math>. Then, two-state systems are placed in one of four states <math>a, b, \alpha, \beta</math>.  
# Bank prepares a pair of orthonormal base states for each state system. Then the two-state system is located in one of four states <math>a, b, \alpha, \beta</math>
# Bank prepares a pair of orthonormal base states for each state system. Then the two-state system is located in one of four states <math>a, b, \alpha, \beta</math>
# The bank records all polarizations and their serial numbers. On the banknote/quantum money the serial number is plain, while polarizations are kept hidden.
# The bank records all polarizations and their serial numbers. On the banknote/quantum money the serial number is plain, while polarizations are kept hidden.
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