179 citations · 760 across the 28 of their papers we have counts for
14 papers · 1 filter
Spin-boson quantum phase transition in multilevel superconducting qubits
Kuljeet Kaur, Théo Sépulcre, Nicolas Roch +3
Superconducting circuits are currently developed as a versatile platform for the exploration of many-body physics, by building on non-linear elements that are often idealized as tw…
Zero-energy quasiparticles in an interacting nanowire containing a topological Josephson junction
Julia Boeyens, Izak Snyman
We study a Josephson junction in a Kitaev chain with particle-hole symmetric nearest neighbor interactions. When the phase difference across the junction is , we show analytical…
Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits
Sebastien Leger, Javier Puertas-Martinez, Karthik Bharadwaj +11
Electromagnetic fields possess zero point fluctuations (ZPF) which lead to observable effects such as the Lamb shift and the Casimir effect. In the traditional quantum optics domai…
A tunable Josephson platform to explore many-body quantum optics in circuit-QED
Javier Puertas Martinez, Sebastien Leger, Nicolas Gheeraert +10
Coupling an isolated emitter to a single mode of the electromagnetic field is now routinely achieved and well understood. Current efforts aim to explore the coherent dynamics of em…
Josephson-Kondo screening cloud in circuit quantum electrodynamics
Izak Snyman, Serge Florens
We show that the non-local polarization response in a multimode circuit-QED setup, devised from a Cooper pair box coupled to a long chain of Josephson junctions, provides an altern…
Hall conductance from Berry curvature in carbon nanotubes
J. D. Brand, I. Snyman
We analytically show that a gap is induced around the Dirac point in the electronic spectrum of a previously metallic nanotube, in the presence of electric and magnetic fields perp…
Polarons in suspended carbon nanotubes
I. Snyman, Yu. V. Nazarov
We prove theoretically the possibility of electric-field controlled polaron formation involving flexural (bending) modes in suspended carbon nanotubes. Upon increasing the field, t…
The gapped state of a carbon mono-layer in periodic magnetic and electric fields
I. Snyman
When smooth, zero-on-average, periodic magnetic and electric fields are applied to a carbon mono-layer (graphene), a gap between the valence and conduction band is introduced. Here…
Calculation of the conductance of a graphene sheet using the Chalker-Coddington network model
I. Snyman, J. Tworzydlo, C. W. J. Beenakker
The Chalker-Coddington network model (introduced originally as a model for percolation in the quantum Hall effect) is known to map onto the two-dimensional Dirac equation. Here we…
The Keldysh action of a multi-terminal time-dependent scatterer
I. Snyman, Y. V. Nazarov
We present a derivation of the Keldysh action of a general multi-channel time-dependent scatterer in the context of the Landauer-Büttiker approach. The action is a convenient build…
Valley-isospin dependence of the quantum Hall effect in a graphene p-n junction
J. Tworzydlo, I. Snyman, A. R. Akhmerov +1
We calculate the conductance G of a bipolar junction in a graphene nanoribbon, in the high-magnetic field regime where the Hall conductance in the p-doped and n-doped regions is 2e…
Exciting half-integer charges in a quantum point contact
I. Snyman, Y. V. Nazarov
We study a voltage-driven quantum point contact (QPC) strongly coupled to a qubit. We predict pronounced observable features in the QPC current that can be interpreted in terms of…
Ballistic transmission through a graphene bilayer
I. Snyman, C. W. J. Beenakker
We calculate the Fermi energy dependence of the (time-averaged) current and shot noise in an impurity-free carbon bilayer (length width ), and compare with known results…
Quantum Tunneling Detection of Two-photon and Two-electron Processes
J. Tobiska, J. Danon, I. Snyman +1
We analyze the operation of a quantum tunneling detector coupled to a coherent conductor. We demonstrate that in a certain energy range the output of the detector is determined by…