Cel Quantum information science and atom optics are among the most active fields in modern physics. In recent years, many theoretical efforts have been made to combine these two fields. Recent experimental progresses have shown the in-principle possibility to perform scalable quantum information processing (QIP) with linear optics and atomic ensembles. The main purpose of the present project is to use atomic qubits as quantum memory and exploit photonic qubits for information transfer and processing to achieve efficient linear optics QIP. On the one hand, utilizing the interaction between laser pulses and atomic ensembles we will experimentally investigate the potentials of atomic ensembles in the gas phase to build quantum repeaters for long-distance quantum communication, that is, to develop a new technological solution for quantum repeaters making use of the effective qubit-type entanglement of two cold atomic ensembles by a projective measurement of individual photons by spontaneous Raman processes. On this basis, we will further investigate the advantages of cold atoms in an optical trap to enhance the coherence time of atomic qubits beyond the threshold for scalable realization of quantum repeaters. Moreover, building on our long experience in research on multi-photon entanglement, we also plan to perform a number of significant experiments in the field of QIP with particular emphasis on fault-tolerant quantum computation, photon-loss-tolerant quantum computation and cluster-state based quantum simulation. Finally, by combining the techniques developed in the above quantum memory and multi-photon interference experiments, we will further experimentally investigate the possibility to achieve quantum teleportation between photonic and atomic qubits, quantum teleportation between remote atomic qubits and efficient entanglement generation via classical feed-forward. The techniques that will be developed in the present project will lay the basis for future large scale Dziedzina nauki engineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwarequantum computersnatural sciencesphysical sciencesopticslaser physicsnatural sciencesphysical sciencestheoretical physicsparticle physicsphotons Słowa kluczowe Quantum information cold atoms single photons Program(-y) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Temat(-y) ERC-SG-PE2 - ERC Starting Grant - Fundamental constituents of matter Zaproszenie do składania wniosków ERC-2007-StG Zobacz inne projekty w ramach tego zaproszenia System finansowania ERC-SG - ERC Starting Grant Instytucja przyjmująca RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG Wkład UE € 1 434 999,60 Adres SEMINARSTRASSE 2 69117 Heidelberg Niemcy Zobacz na mapie Region Baden-Württemberg Karlsruhe Heidelberg, Stadtkreis Rodzaj działalności Higher or Secondary Education Establishments Kontakt administracyjny Norbert Huber (Dr.) Kierownik naukowy Jian-Wei Pan (Dr.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych Beneficjenci (1) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG Niemcy Wkład UE € 1 434 999,60 Adres SEMINARSTRASSE 2 69117 Heidelberg Zobacz na mapie Region Baden-Württemberg Karlsruhe Heidelberg, Stadtkreis Rodzaj działalności Higher or Secondary Education Establishments Kontakt administracyjny Norbert Huber (Dr.) Kierownik naukowy Jian-Wei Pan (Dr.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych