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Showing 1–9 of 9 results
Advanced filters: Author: S. Jezouin Clear advanced filters

  • When physicists study the characteristics of quantum conductors they usually take great pains to limit the resistance of other elements in the system. But Jezouin et al. show that when a single quantum channel is measured in series with a resistor, it exhibits analogous characteristics to a Tomonaga–Luttinger liquid.

    • S. Jezouin
    • M. Albert
    • F. Pierre
    ResearchOpen Access
    Nature Communications
    Volume: 4, P: 1-8

  • Information leaked by a quantum system into its environment causes decoherence but if it is recorded then it can be used to infer the quantum state. Ficheux et al. monitor the relaxation and dephasing of a qubit and show that this allows all three components of the qubit to be probed simultaneously.

    • Q. Ficheux
    • S. Jezouin
    • B. Huard
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-6

  • At the nanoscale, the conductance of a coherent conductor is reduced by the back-action of the circuit in which it is inserted. The effect has been primarily studied for cases where it is small, but these authors explore the regime of strong back-action—with conductance reductions of up to 90%—and propose a generalized expression for the conductance of quantum channels embedded in linear circuits.

    • F. D. Parmentier
    • A. Anthore
    • F. Pierre
    Research
    Nature Physics
    Volume: 7, P: 935-938

  • Mesoscopic electrical circuits are an ideal platform to explore quantum phenomena, but this requires cooling the electrons to very low temperature, which is challenging. Here, the authors employ three different in situthermometers to report electronic quantum transport at 6mK in a micrometer-scale circuit.

    • Z. Iftikhar
    • A. Anthore
    • F. Pierre
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • A device consisting of a metallic island connected to electrodes via tunable semiconductor-based conduction channels is used to explore the evolution of charge quantization in the presence of quantum fluctuations; the measurements reveal a robust scaling of charge quantization as the square root of the residual electron reflection probability across a quantum channel, consistent with theoretical predictions.

    • S. Jezouin
    • Z. Iftikhar
    • F. Pierre
    Research
    Nature
    Volume: 536, P: 58-62

  • Zero-temperature quantum phase transitions and their associated quantum critical points are believed to underpin the exotic finite-temperature behaviours of many strongly correlated electronic systems, but identifying the microscopic origins of these transitions can be challenging and controversial; Iftikhar et al. (see also the related paper by Keller et al.) show how such behaviours can be engineered into nanoelectronic quantum dots, which permit both precise experimental control of the quantum critical behaviour and its exact theoretical characterization.

    • Z. Iftikhar
    • S. Jezouin
    • F. Pierre
    Research
    Nature
    Volume: 526, P: 233-236