Coupling a Quantum Dot, Fermionic Leads, and a Microwave Cavity on a Chip

Matthieu Delbecq (1) , Vivien Schmitt (1) , François Parmentier (1) , Nicolas Roch (1) , Jeremie Viennot (1) , Gwendal Fève (1) , Benjamin Huard (1) , Christophe Mora (1) , Audrey Cottet (1) , Takis Kontos (1)

1 LPA - Laboratoire Pierre Aigrain

We demonstrate a hybrid architecture consisting of a quantum dot circuit coupled to a single mode of the electromagnetic field. We use single wall carbon nanotube based circuits inserted in superconducting microwave cavities. By probing the nanotube dot using a dispersive readout in the Coulomb blockade and the Kondo regime, we determine an electron-photon coupling strength which should enable circuit QED experiments with more complex quantum dot circuits.

Domaines: Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Matthieu Delbecq, Vivien Schmitt, François Parmentier, Nicolas Roch, Jeremie Viennot, et al.. Coupling a Quantum Dot, Fermionic Leads, and a Microwave Cavity on a Chip. Physical Review Letters, 2011, 107, pp.256804. ⟨hal-00657375⟩