Research in QPC team

Scientific Highlights:

  • Observing the progressive many-body screening of a Kondo impurity, using charge states to implement a pseudospin and a capacitively coupled charge detector to measure it (Nature Communications, 2023).
  • Probing the anyon statistics with cross-correlations, of pi/3 and 3pi/5 fractional quantum Hall anyons (Phys. Rev. X, 2023).
  • Andreev-like scattering of a fractional quasiparticle, into a transmitted quasielectron and a fractional quasihole (Nature Communications, 2023).
  • Electronic heat flow and thermal shot noise in quantum circuits. Beyond electrical conductance, we observed the flow of heat and shot noise in response to a temperature difference in a composite quantum  circuit (Nature Communications, 2019).
  • Transmitting the quantum state of electrons with Coulomb interaction, across a metallic island that individual electrons could not traverse during their quantum lifetime (Science, 2019).
  • Macroscopic (0.25mm) electron quantum coherence in a solid-state circuit, achieved through nano-circuit engineering along the quantum Hall edge channels (Phys. Rev. X, 2019).
  • Analog quantum simulation at the threshold of quantum supremacy, using a quantum circuit to emulate a Luttinger liquid with a single impurity (Phys. Rev. X, 2018).
  • Tunable quantum criticality and super-ballistic transport explored in a 'charge' Kondo circuit (Science, 2018).
  • Heat Coulomb blockade of one ballistic channel. Coulomb interaction influences heat and electricity profoundly differently, beyond the widespread Wiedemann-Franz law paradigm (Nature Physics, 2018).
  • Controlling charge quantization with quantum fluctuations, in a metallic circuit node (Nature, 2016).
  • Observation of the 'charge' Kondo effect. The Kondo effect, a test-bed for the strongly-correlated electron physics, also applies to the macroscopic quantum degrees of freedom of electrical circuits (Nature, 2015).
  • Measurement of the quantum limit of heat flow across a single electronic channel. Heating drives the transition toward a classical description, but heat transport itself is ruled by quantum mechanics (Science, 2013).
  • Quantum back-action of dissipative circuits on the conductance of an arbitrary electronic channel, a phenomenon with quantum engineering implications for the future of nanoelectronic (Nature Physics, 2011).
  • Out-of-equilibrium spectroscopy of the electronic distribution function in a 1D conductor, the quantum Hall channel (Nature Physics, 2010).

Technical Highlights:

  • 6 mK temperature for the electrons in quantum circuits, a record for small devices (Nature Communications, 2016).
  • Noise is the signal, with a ultra-high resolution on current noise (5 10-32 A2/Hz, current state of the art).

Research Lines:

  1. Many-body quantum physics
  2. Heat quantum transport

List of the team's publications.


Project Quantropy (ERC synergy, 2021-2027)


E. Boulat at Paris University

Y. Gefen at Weizmann Institute

U. Gennser at C2N (2DEG team)

I. Gornyi at KIT

L. Glazman at Yale (web)

Y. Jin at C2N (NanoFET team)

Y. Meir at Ben Gurion University

A. Mitchell at College Dublin (web)

C. Mora at LPA-ENS (web)

I. Safi at LPS-Orsay

E. Sela at Tel Aviv University

P. Simon at LPS-Orsay (web)

E. Sukhorukov at Univ de Geneve