Abstract
Transmission of nonclassical quantum states by quantum teleportation of continuous variables is studied. Protocol of quantum teleportation via a two-mode squeezed-vacuum state in a noisy environment is formulated by the Glauber-Sudarshan P-function. Using the nonclassical depth as an estimation parameter of transmission performance, we compare the teleportation scheme with the direct transmission through a noisy channel. The noise model is based on the coupling to the vacuum field. We find that the teleportation channel has better transmission performance than the direct transmission channel in a certain region. The bounds for such region and for obtaining the nonvanished nonclassicality of the teleported quantum states are also discussed. We also mention the required conditions for transmitting nonclassical features in real experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 119-127 |
| Number of pages | 9 |
| Journal | Journal of the Communications Research Laboratory |
| Volume | 49 |
| Issue number | 1 |
| Publication status | Published - 2002 Mar |
| Externally published | Yes |
Keywords
- Continuous variable
- Non-classical depth
- Quantum teleportation
- Two-mode squeezed-vacuum
ASJC Scopus subject areas
- Electrical and Electronic Engineering