October 26, 2022
      
                  
        
  Author(s)
  Sonia  Buckley,   Michelle  Stephens,   John H.  Lehman
 
       
            
    
    
        For quantum applications, it is important to generate quantum states of light and detect them with extremely high efficiency. For future applications, it also important to do this at scale. This presents many engineering and metrology challenges. This