Experimental realization of freely propagating teleported qubits
- Author(s)
- Jian-Wei Pan, Sara Gasparoni, Markus Aspelmeyer, Thomas Jennewein, Anton Zeilinger
- Abstract
Quantum teleportation is central to quantum communication, and plays an important role in a number of quantum computation protocols. Most information-processing applications of quantum teleportation include the subsequent manipulation of the qubit (the teleported photon), so it is highly desirable to have a teleportation procedure resulting in high-quality, freely flying qubits. In our previous teleportation experiment, the teleported qubit had to be detected (and thus destroyed) to verify the success of the procedure. Here we report a teleportation experiment that results in freely propagating individual qubits. The basic idea is to suppress unwanted coincidence detection events by providing the photon to be teleported much less frequently than the auxiliary entangled pair. Therefore, a case of successful teleportation can be identified with high probability without the need actually to detect the teleported photon. The experimental fidelity of our procedure surpasses the theoretical limit required for the implementation of quantum repeaters.
- Organisation(s)
- External organisation(s)
- University of Science and Technology Beijing
- Journal
- Nature
- Volume
- 421
- Pages
- 721-725
- No. of pages
- 5
- ISSN
- 0028-0836
- DOI
- https://doi.org/10.1038/nature01412
- Publication date
- 2003
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/f66a3f47-2ed2-4c54-87d8-893a66ad4540