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Quantum teleportation and entanglement distribution over 100-kilometre free-space channels
- Source :
- Nature 488 185-188 (2012)
- Publication Year :
- 2012
-
Abstract
- A long standing goal for quantum communication is to transfer a quantum state over arbitrary distances. Free-space quantum communication provides a promising solution towards this challenging goal. Here, through a 97-km free space channel, we demonstrate long distance quantum teleportation over a 35-53 dB loss one-link channel, and entanglement distribution over a 66-85 dB high-loss two-link channel. We achieve an average fidelity of {80.4(9)}% for teleporting six distinct initial states and observe the violation of the Clauser-Horne-Shimony-Holt inequality after distributing entanglement. Besides being of fundamental interest, our result represents a significant step towards a global quantum network. Moreover, the high-frequency and high-accuracy acquiring, pointing and tracking technique developed in our experiment provides an essential tool for future satellite-based quantum communication.<br />Comment: 9 pages, 8 figures
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Nature 488 185-188 (2012)
- Publication Type :
- Report
- Accession number :
- edsarx.1205.2024
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1038/nature11332