Experimental quantum teleportation over a high-loss free-space channel
We present a high-fidelity quantum teleportation experiment over a high-loss free-space channel between two laboratories. We teleported six states of three mutually unbiased bases and obtained an average state fidelity of 0.82(1), well beyond the classical limit of 2/3. With the obtained data, we to...
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| Veröffentlicht in: | Optics express 2012-10, Vol.20 (21), p.23126-23137 |
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| container_issue | 21 |
| container_start_page | 23126 |
| container_title | Optics express |
| container_volume | 20 |
| creator | Ma, Xiao-song Kropatschek, Sebastian Naylor, William Scheidl, Thomas Kofler, Johannes Herbst, Thomas Zeilinger, Anton Ursin, Rupert |
| description | We present a high-fidelity quantum teleportation experiment over a high-loss free-space channel between two laboratories. We teleported six states of three mutually unbiased bases and obtained an average state fidelity of 0.82(1), well beyond the classical limit of 2/3. With the obtained data, we tomographically reconstructed the process matrices of quantum teleportation. The free-space channel attenuation of 31 dB corresponds to the estimated attenuation regime for a down-link from a low-earth-orbit satellite to a ground station. We also discussed various important technical issues for future experiments, including the dark counts of single-photon detectors, coincidence-window width etc. Our experiment tested the limit of performing quantum teleportation with state-of-the-art resources. It is an important step towards future satellite-based quantum teleportation and paves the way for establishing a worldwide quantum communication network. |
| doi_str_mv | 10.1364/OE.20.023126 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1094-4087 |
| ispartof | Optics express, 2012-10, Vol.20 (21), p.23126-23137 |
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| language | eng |
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| source | MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| subjects | Equipment Design Equipment Failure Analysis Light Optical Devices Quantum Theory Scattering, Radiation Telecommunications - instrumentation |
| title | Experimental quantum teleportation over a high-loss free-space channel |
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