Ju n 20 05 No-Flipping as a consequence of No-Signalling and Non-increase of Entanglement under LOCC

@inproceedings{Chattopadhyay2008JuN2,
  title={Ju n 20 05 No-Flipping as a consequence of No-Signalling and Non-increase of Entanglement under LOCC},
  author={Indrani Chattopadhyay and Sujit K. Choudhary and Guruprasad Kar and Samir Kunkri and Debasis Sarkar},
  year={2008}
}
Non existence of Universal NOT gate for arbitrary quantum mechanical states is a fundamental constraint on the allowed operations performed on physical systems. The largest set of states that can be flipped by using a single NOT gate is the set of states lying on a great circle of the Bloch-sphere. In this paper, we show the impossibility of universal exact-flipping operation, first by using the fact that no faster than light communication is possible and then by using the principle of “non… CONTINUE READING