Two nonorthogonal states can be cloned by a unitaryreduction process
Abstract
We show that, there are physical means for cloning two nonorthogonal pure states which are secretly chosen from a certain set $% \$={  \Psi_0 > ,  \Psi_1 > }$. The states are cloned through a unitary evolution together with a measurement. The cloning efficiency can not attain 100%. With some negative measurement results, the cloning fails.
 Publication:

arXiv eprints
 Pub Date:
 April 1997
 DOI:
 10.48550/arXiv.quantph/9704020
 arXiv:
 arXiv:quantph/9704020
 Bibcode:
 1997quant.ph..4020D
 Keywords:

 Quantum Physics
 EPrint:
 9 pages, no figures, Latex