79 citations · 304 across the 14 of their papers we have counts for
14 papers
Dissipative spin dynamics near a quantum critical point: Numerical Renormalization Group and Majorana diagrammatics
Serge Florens, Axel Freyn, Davide Venturelli +1
We provide an extensive study of the sub-ohmic spin-boson model with power law density of states J(ω)=ω^s (with 0<s<1), focusing on the equilibrium dynamics of the three possible s…
Universal transport signatures in two-electron molecular quantum dots: gate-tunable Hund's rule, underscreened Kondo effect and quantum phase transitions
Serge Florens, Axel Freyn, Nicolas Roch +4
We review here some universal aspects of the physics of two-electron molecular transistors in the absence of strong spin-orbit effects. Several recent quantum dots experiments have…
Production of non-local quartets and phase-sensitive entanglement in a superconducting beam splitter
Axel Freyn, Benoit Douçot, Denis Feinberg +1
Three BCS superconductors S_a, S_b, and S and two short normal regions N_a and N_b in a three-terminal S_aN_aSN_bS_b set-up provide a source of non-local quartets spatially separat…
Numerical Renormalization Group at marginal spectral density: application to quantum tunneling in Luttinger liquids
Axel Freyn, Serge Florens
Many quantum mechanical problems (such as dissipative phase fluctuations in metallic and superconducting nanocircuits, or impurity scattering in Luttinger liquids) involve a contin…
Universal Scaling of the Quantum Conductance of an Inversion-Symmetric Interacting Model
Axel Freyn, Jean-Louis Pichard
We consider quantum transport of spinless fermions in a 1D lattice embedding an interacting region (two sites with inter-site repulsion U and inter-site hopping td, coupled to lead…
Positive current cross-correlations in a highly transparent normal-superconducting beam splitter due to synchronized Andreev and inverse Andreev reflections
Axel Freyn, Martina Flöser, Régis Mélin
Predictions are established for linear differential current-current cross-correlations dSab/dV in a symmetrically biased three-terminal normal metal-superconductor-normal metal (NS…