The development of phase coherent electronics has partially consisted in probing to which extent the concepts of quantum optics could be adapted to electronic conductors. Here, we contribute to a unified description of electric transport in a phase coherent conductor and of the photonic degrees of freedom it is coupled to. We investigate both the properties of the photons emitted by a phase coherent conductor and the feedback of the coupling to the electromagnetic environment on quantum electronic transport itself.

  • Bright Side of the Coulomb Blockade, M. Hofheinz, F. Portier, Q. Baudouin, P. Joyez, D. Vion, P. Bertet, P. Roche, and D. Esteve  Phys. Rev. Lett. 106, 217005 (2011), (arxiv)
  • Experimental Determination of the Statistics of Photons Emitted by a Tunnel Junction, Eva Zakka-Bajjani, J. Dufouleur, N. Coulombel, P. Roche, D. C. Glattli, and F. Portier Phys. Rev. Lett. 104, 206802 (2010), (arxiv)
  • Experimental Test of the High-Frequency Quantum Shot Noise Theory in a Quantum Point Contact, E. Zakka-Bajjani, J. S├ęgala, F. Portier, P. Roche, D. C. Glattli, A. Cavanna and Y. Jin  Phys. Rev. Lett. 99, 236803 (2007), (arxiv)
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Spectral density of the radiation emitted by a Josephson junction in the DCB regime for one-left panel- and two photon processes-middle panel. The junction is embedded in a quarter wavelength resonator, which impedance is given by the right panel.