The quantum channel consisting of continuous variable quantum teleportation based on the standard protocol is investigated. It is shown that a quantum channel for continuous variable teleportation by an aribitrary entangled state is equivalent to a generalized thermalizing channel. The transmission of nonclassical states by the teleportation channel with a two-mode squeezed-vacuum state in a noisy environment is also studied. The transmisson performance is evaluated by using the Glauber-Sudarshan P-function and the nonclassical depth. Finally, the obtained results are compared to those of the noisy direct transmission channel. It is shown that the teleportation channel has better performance than the direct transmission channel in a certain region.
|Number of pages||9|
|Journal||Optika i Spektroskopiya|
|Publication status||Published - 2003|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics