Long Distance Quantum Teleportation in a Quantum Relay Configuration
Physical Review Letters 92(4)
Article 2004 English
Authors
HR
Hugues de Riedmatten
IM
I. Marcikic
WT
Wolfgang Tittel
Abstract
1 min read
A long distance quantum teleportation experiment with a fiber-delayed Bell state measurement (BSM) is reported. The source creating the qubits to be teleported and the source creating the necessary entangled state are connected to the beam splitter realizing the BSM by two 2 km long optical fibers. In addition, the teleported qubits are analyzed after 2.2 km of optical fiber, in another laboratory separated by 55 m. Time-bin qubits carried by photons at 1310 nm are teleported onto photons at 1550 nm. The fidelity is of 77%, above the maximal value obtainable without entanglement. This is the first realization of an elementary quantum relay over significant distances, which will allow an increase in the range of quantum communication and quantum key distribution.
Félix Bussières, Christoph Clausen, Alexey Tiranov, Boris Korzh, Varun B. Verma, Sae Woo Nam, Francesco Marsili, Alban Ferrier, Philippe Goldner, Hartmut Herrmann, Christine Silberhorn, W. Sohler, Mikael Afzelius, Nicolas Gisin
Discussion(0)
No comments yet. Be the first to comment.