Patent ID: 11960971
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 2:
3. The method according to claim 2, wherein the model for the matrix is such that the matrix is a product of a plurality of qubit matrices, each qubit matrix representing a state of a given qubit j in the plurality of qubits, the matrix being expressed as:, A
   =
   
    
     [
     
      
       
        
         1
         -
         
          ϵ
          1
         
        
       
       
        
         η
         1
        
       
      
      
       
        
         ϵ
         1
        
       
       
        
         1
         -
         
          η
          1
         
        
       
      
     
     ]
    
    ⊗
       
    …
       
    ⊗
    
     [
     
      
       
        
         1
         -
         
          ϵ
          n
         
        
       
       
        
         η
         n
        
       
      
      
       
        
         ϵ
         n
        
       
       
        
         1
         -
         
          η
          n
         
        
       
      
     
     ]
    
   
  
  ,, wherein ϵi are error rates describing transition from state 0 to state 1 for qubit j (j=1 . . . n), and
wherein ηi (j=1 . . . n) are error rates describing transition from state 1 to state 0 for qubit j (j=1 . . . n).