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Prepare-and-Send Universal Blind Quantum Computation
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==='''Stage 2:''' Computation Stage=== *Input: Client: Measurement Angle: <math>\delta_{x,y}</math> *Output: Server: Measurement Outcome: <math>s_{x,y}</math> **'''Interaction and measurement''' #For each column x = 1,...,n ##For each row y = 1,...,m ###Client computes <math>\phi '_{x,y}</math> where <math>s^X_{0,y}=s^Z_{0,y}=0</math> <br/> ###Client chooses <math>r_{x,y} \epsilon_R {0,1}</math> and computes <math>\delta_{x,y}=\phi '_{x,y}+\theta_{x,y}+\pi r_{x,y}</math>. ###Client transmits <math>\delta_{x,y}</math> to Server. Server measures in the basis <math>\{|+_{\delta_{x,y}}\rangle, |-_{\delta_{x,y}}\rangle\}</math> ###Server transmits the result <math>s_{x,y}\epsilon {0,1}</math> to Client. ###If <math>r_{x,y} = 1,</math> Client flips <math>s_{x,y}</math>; otherwise she does nothing. **'''Output Correction [only for quantum outputs]''' #Server sends to Client all qubits in the last layer. #Client performs the final Pauli corrections .
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