June 6, 2016
      
                  
        
  Author(s)
  Thomas P. Purdy,   Karen E. Grutter,   Kartik  Srinivasan,   Nikolai  Klimov,   Zeeshan  Ahmed,   Jacob  Taylor
 
       
            
    
    
        Thermally-driven motion of a nanomechanical resonator may be employed as an absolute thermometer. We experimentally measure radiation pressure shot noise induced quantum correlations to absolutely calibrate the motional signal transduced onto an optical