Abstract
We propose an optimal strategy for continuous-variable teleportation in a realistic situation. We show that the typical imperfect quantum operation can be described as a combination of an asymmetrically decohered quantum channel and perfect apparatuses for other operations. For the asymmetrically decohered quantum channel, we find some counterintuitive results: teleportation does not necessarily get better as the channel is initially squeezed more. We show that decoherence-assisted measurement and transformation may enhance fidelity for an asymmetrically mixed quantum channel.
| Original language | English |
|---|---|
| Pages (from-to) | 012309 |
| Number of pages | 1 |
| Journal | Physical Review A |
| Volume | 6401 |
| Issue number | 1 |
| Publication status | Published - Jul 2001 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)