Patent ID: 11893453
Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. The quantum noise process analysis device according to claim 11, wherein to calculate the correlation function of the quantum noise process according to the second-order memory kernel of the quantum noise process comprises:
numerically extract the correlation function of Cαα′ the quantum noise process according to the following formula:, argmin
    
     
      C
      
       αα
       ′
      
     
     (
     
      t
      n
     
     )
    
   
   ⁢
   
    {
    
     
      
       ❘
       "\[LeftBracketingBar]"
      
      
       
        
         κ
         2
        
        (
        
         
          t
          n
         
         ;
         
          
           C
           
            αα
            ′
           
          
          (
          
           t
           n
          
          )
         
        
        )
       
       -
       
        
         κ
         exp
        
        (
        
         t
         n
        
        )
       
      
      
       ❘
       "\[RightBracketingBar]"
      
     
     +
     
      
       (
       
        1
        -
        
         δ
         
          
           t
           n
          
          ,
          
           t
           0
          
         
        
       
       )
      
      ⁢
      
       λ
       n
      
      ⁢
      
       
        ∑
        
         α
         ,
         
          α
          ′
         
        
       
       
        
         ❘
         "\[LeftBracketingBar]"
        
        
         
          
           C
           
            αα
            ′
           
          
          (
          
           t
           n
          
          )
         
         -
         
          
           C
           
            αα
            ′
           
          
          (
          
           t
           
            n
            -
            1
           
          
          )
         
        
        
         ❘
         "\[RightBracketingBar]"
        
       
      
     
    
    }
   
  
  ,
 

wherein κ2 represents the second-order memory kernel of the quantum noise process, tn represents the nth time point, Cαα′ (tn) is a second-order correlation function at the nth time point tn, κexp represents an approximate second-order memory kernel obtained through an experiment, δtn,t0 is a Kronecker function, λn is an adjustable parameter, and Cαα′(tn−1) is a second-order correlation function at an (n−1)th time point tn−1.