Two non-orthogonal states can be cloned by a unitary-reduction process
Abstract
We show that, there are physical means for cloning two non-orthogonal 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:
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arXiv e-prints
- Pub Date:
- April 1997
- DOI:
- 10.48550/arXiv.quant-ph/9704020
- arXiv:
- arXiv:quant-ph/9704020
- Bibcode:
- 1997quant.ph..4020D
- Keywords:
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- Quantum Physics
- E-Print:
- 9 pages, no figures, Latex