Volume 56, Number 4, November 2001
|Page(s)||478 - 484|
|Published online||01 December 2003|
The state evolution formulation of teleportation for continuous variables
Department of Physics, Hong Kong Baptist University - Hong Kong, PRC
2 The Key Laboratory of Quantum Optics, Ministry of Education - PRC and Institute of Opto-electronics, Shanxi University - PRC
3 Department of Physics, Xi'an jiaotong University - PRC
4 Department of Physics, Texas A& M University College Station - TX 77843, USA
Accepted: 3 September 2001
The quantum teleportation of continuous variables is formulated through the state evolution in the Schrödinger picture from the viewpoint of general quantum-mechnical measurement theory. This method provides the connection between the teleportation and the reversible quantum operations. In this way, the state evolution process of teleportation can be presented clearly step by step, the criterium of teleportation for a coherent state is also deduced.
PACS: 03.67.Hk – Quantum communication / 42.50.Dv – Nonclassical field states; squeezed, antibunched, and sub-Poissonian states; operational definitions of the phase of the field; phase measurements
© EDP Sciences, 2001
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