Response to `Comment on "Experimental demonstration of a universally   valid error-disturbance uncertainty relation in spin measurements" '
  Here, we reply to the comment by Y. Kurihara. We show that the argument by the author is on an improper basis and thus disagree with his opinion. 
Jacqueline Erhart, Stephan Sponar, Georg Sulyok, Gerald Badurek,   Masanao Ozawa, and Yuji Hasegawa
quant-ph