Title :
Long-distance atom-photon entanglement
Author :
Rosenfeld, Wenjamin ; Hocke, F. ; Henkel, Frank ; Krug, Markus ; Ortegel, Norbert ; Hofmann, Julian ; Weber, Markus ; Weinfurter, Harald
Author_Institution :
Fak. fur Phys., Ludwig-Maximilians Univ. Munchen, Munich, Germany
Abstract :
Atoms and photons are well-suited candidates for quantum information processing and quantum communication. While atoms can be used for storage and manipulation, photons are ideal carriers for the transfer of quantum information. Our group pursues the goal of creating a basic node of a quantum communication network by entangling two independently trapped &7Rb atoms over a large distance. Besides its prospects in quantum commuAcircnot nication (e.g. quantum repeater), this would also allow a loophole-free test of Bell´s inequality which can help to conclusively answer the long-standing question about the completeness of the quantum theory. The key ingredient is atom-photon entanglement which will enable us to entangle two atoms by entanglement swapping. We plan to achieve a distance of 300m between two independent single atom traps.
Keywords :
optical information processing; quantum communication; quantum entanglement; Bell´s inequality; atom traps; entanglement swapping; long-distance atom-photon entanglement; manipulation; quantum communication network; quantum information processing; quantum theory; storage; Atom optics; Atomic measurements; Birefringence; Charge carrier processes; Information processing; Optical control; Optical fiber polarization; Optical fibers; Pulse measurements; Quantum mechanics;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192724