par Cerf, Nicolas 
;Ipe, A.;Rottenberg, X.
Référence Physical Review Letters, 85, page (1754-1757)
Publication Publié, 2000
;Ipe, A.;Rottenberg, X.Référence Physical Review Letters, 85, page (1754-1757)
Publication Publié, 2000
Article révisé par les pairs
| Résumé : | The cloning of quantum variables with continuous spectra is analyzed. A Gaussian quantum cloning machine is exhibited that copies equally well the states of two conjugate variables such as position and momentum. It also duplicates all coherent states with a fidelity of 2/3. More generally, the copies are shown to obey a no-cloning Heisenberg-like uncertainty relation. |
