Revisiting impossible quantum operations using principle of   no-signalling and non increase of entanglement under LOCC
  In this letter, we show the impossibility of the general operation introduced by Pati [3] using two different but consistent principles (i) no-signalling (ii) non increase of entanglement under LOCC. 
Indranil Chakrabarty, Satyabrata Adhikari, B.S. Choudhury