We discuss the close connections between cloning of quantum states and superluminal signaling. We present an optimal universal cloning machine based on stimulated emission recently proposed by us. As an instructive example, we show how a scheme for superluminal communication based on this cloning machine fails.
机构:
St Petersburg State Univ Aerosp Instrumentat, Lab Quantum Informat, St Petersburg 190000, RussiaSt Petersburg State Univ Aerosp Instrumentat, Lab Quantum Informat, St Petersburg 190000, Russia
机构:
Quantum Information and Commun., Ecole Polytechnique, Universite Libre de Bruxelles, CP 165/59, 1050 Brussels, BelgiumQuantum Information and Commun., Ecole Polytechnique, Universite Libre de Bruxelles, CP 165/59, 1050 Brussels, Belgium
Navez, Patrick
Cerf, Nicolas J.
论文数: 0引用数: 0
h-index: 0
机构:
Quantum Information and Commun., Ecole Polytechnique, Universite Libre de Bruxelles, CP 165/59, 1050 Brussels, BelgiumQuantum Information and Commun., Ecole Polytechnique, Universite Libre de Bruxelles, CP 165/59, 1050 Brussels, Belgium
Cerf, Nicolas J.
Physical Review A - Atomic, Molecular, and Optical Physics,
2003,
68
(03):
: 1
-
032313