Long distance quantum teleportation of qubits from photons at 1300 nm to photons at 1550 nm wavelength
arXiv:quant-ph/0301178 · doi:10.1038/nature01376
Abstract
Elementary 2-dimensional quantum states (qubits) encoded in 1300 nm wavelength photons are teleported onto 1550 nm photons. The use of telecommunication wavelengths enables to take advantage of standard optical fibre and permits to teleport from one lab to a distant one, 55 m away, connected by 2 km of fibre. A teleportation fidelity of 81.2 % is reported. This is large enough to demonstrate the principles of quantum teleportation, in particular that entanglement is exploited. This experiment constitutes a first step towards a quantum repeater.
7 pages, 5 figures, Extended version of Nature letter
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