Participants in the QGates Network

Ecole Normale Superieure

Team leader

Prof. S. Haroche

Note: This participant is part of a UMR including two other bodies, the Centre National de Recherche Scientifique (ENS) and the Universite Pierre et Marie Curie.

Expertise and experience of the participating organisation

Our group has a long standing expertise in experiments on fundamental quantum mechanics and quantum information processing with Rydberg atoms and superconducting millimetre-wave cavities. We have a good experience of cryogenic systems, down to the sub-Kelvin region, including the design of cryostats and cryogenerators. We master millimetre-wave technology and Rydberg state spectroscopy. Our superconducting cavities have prepared us to using superconducting devices. We have a close collaboration with the "Quantronics" group led by M. Devoret and D. Estève in CEA/Saclay (France) for the realization of the superconducting chips. One of us (G. Nogues) spent a more than one year post doctoral stay with M. Kasevich, in Yale, working on Bose Einstein condensation. We can also benefit from a direct interaction with the cold atom groups led by C. Cohen-Tannoudji. Finally, one of our students spent a part of his thesis work in the group of Ted Hänsch, in Munich, to get acquainted with the room temperature atom-chips technology. We have been involved in a former IST project (QUBITS) and in four European networks. Our administrative agents have a good knowledge of the EC accounting rules.

Relevant recent publications

  • G. Nogues, A. Rauschenbeutel, S. Osnaghi, M. Brune, J.M. Raimond, S. Haroche, Nature, 400, 239 (1999): "Seeing a single photon without destroying it".
  • A. Rauschenbeutel, G. Nogues, S. Osnaghi, P. Bertet, M. Brune, J.M. Raimond et S. Haroche, Phys. Rev. Lett., 83, 5166 (1999): "Coherent operation of a tunable quantum phase gate in Cavity QED".
  • A. Rauschenbeutel, G. Nogues, S. Osnaghi, P. Bertet, M. Brune, J.M. Raimond, S. Haroche, Science, 288, 2024 (2000): "Step by step engineered many particle entanglement".
  • J.M. Raimond, M. Brune, S. Haroche, Rev. Mod. Phys. 73, 565 (2001) : "Manipulating quantum entanglement with atoms and photons in a cavity".
  • P. Bertet, S. Osnaghi, A. Rauschenbeutel, G. Nogues, A. Auffeves, M. Brune, J.M. Raimond, S. Haroche, Nature, 411, 166 (2001): "A complementarity experiment with an interferometer at the quantum-classical boundary".
  • S. Osnaghi, P. Bertet, A. Auffeves, P. Maioli, M. Brune, J.M. Raimond, S. Haroche, Phys. Rev. Lett. 87, 037902 (2001) "Coherent control of an atomic collision in a cavity".
  • A. Rauschenbeutel, P. Bertet, S. Osnaghi, G. Nogues, M. Brune, J.M. Raimond, S. Haroche, Phys. Rev. A 64, 050301 (2001) "Controlled entanglement of two field modes in a cavity quantum electrodynamics experiment".

    Involvement in other EC projects

    The ENS group are involved in QUBITS (QIPC RTD) and QUEST (IHP).

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