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  1. No Access

    Article

    Near-quantum-limited amplification from inelastic Cooper-pair tunnelling

    The readout of microwave quantum systems, such as spin or superconducting qubits, requires low-noise amplifiers with added noise as close as possible to the quantum limit. This limit has so far been approached...

    S. Jebari, F. Blanchet, A. Grimm, D. Hazra, R. Albert, P. Joyez… in Nature Electronics (2018)

  2. Article

    Andreev bound states in supercurrent-carrying carbon nanotubes revealed

    Although carbon nanotubes are not superconductors they can carry supercurrents injected from superconducting contacts. Analysis of the tunnelling spectra of a nanotube connecting two superconductors reveals th...

    J-D. Pillet, C. H. L. Quay, P. Morfin, C. Bena, A. Levy Yeyati, P. Joyez in Nature Physics (2010)

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  3. No Access

    Chapter

    Decoherence of a Josephson Quantum Bit during its Free Evolution: The Quantronium

    Relaxation and coherence times of the quantronium, a Josephson Quantum Bit (qubit), as a function of its operating point have been measured. Several coherence times are obtained from complementary techniques s...

    G. Ithier, E. Collin, P. Joyez, P. J. Meeson… in Quantum Computing in Solid State Systems (2006)

  4. No Access

    Chapter

    Manipulation and Readout of a Josephson Qubit

    We have operated a Josephson qubit device in which a long coherence time is obtained by decoupling the qubit from the readout circuit during manipulation. The achieved quantum coherence is sufficient to allow ...

    D. Vion, A. Aassime, A. Cottet, P. Joyez… in Quantum Computing and Quantum Bits in Meso… (2004)

  5. No Access

    Chapter and Conference Paper

    Superconducting quantum bit based on the Cooper pair box

    The more advanced proposals so far for the implementation of qubits and quantum gates for quantum computation[1] are based on ions or atoms in vacuum [2, 3]. These systems have been manipulated individually in a ...

    D. Vion, A. Aassime, A. Cottet, P. Joyez… in New Directions in Mesoscopic Physics (Towa… (2003)

  6. No Access

    Chapter

    Superconducting Electrometer for Measuring the Single Cooper Pair Box

    We discuss for the single Cooper pair box the contributions to relaxation and to decoherenee of the electromagnetic environment, of the offset charg enoise, and of a measuring Single Electron Transistor. We sh...

    A. Cottet, A. Steinbach, P. Joyez, D. Vion… in Macroscopic Quantum Coherence and Quantum … (2001)

  7. No Access

    Article

    Quantum Coherence of Charge States in the Single Electron Box

    A metallic electrode connected to electron reservoirs by tunnel junctions has a series of charge states corresponding to the number of excess electrons in the electrode. In contrast to the charge state of an a...

    V. Bouchiat, D. Vion, P. Joyez, D. Esteve, M. H. Devoret in Journal of Superconductivity (1999)

  8. No Access

    Article

    The Josephson Effect in Nanoscale Tunnel Junctions

    In nanoscale Josephson junctions, the Josephson coupling energy is usually comparable with the charging energy of the junction and with the typical energy of thermal fluctuations. Under these circumstances, ph...

    P. Joyez, D. Vion, M. Götz, M. H. Devoret, D. Esteve in Journal of Superconductivity (1999)

  9. No Access

    Article

    Two-electron quantization of the charge on a superconductor

    THE theoretical understanding of superconductors is based on the notion of electron pairing into Cooper pairs1. The first direct evidence for electron pairing was the observation that the flux threading a superco...

    P. Lafarge, P. Joyez, D. Esteve, C. Urbina, M. H. Devoret in Nature (1993)