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Thermal rectification in nonlinear quantum circuits
Tomi Ruokola, Teemu Ojanen, Antti-Pekka Jauho
We present a theoretical study of radiative heat transport in nonlinear solid-state quantum circuits. We give a detailed account of heat rectification effects, i.e. the asymmetry o…
Electron- and phonon transport in silicon nanowires: an atomistic approach to thermoelectric properties
Troels Markussen, Antti-Pekka Jauho, Mads Brandbyge
We compute both electron- and phonon transmissions in thin disordered silicon nanowires. Our atomistic approach is based on tight-binding and empirical potential descriptions of th…
Nanostructure design for surface-enhanced Raman spectroscopy - prospects and limits
Sanshui Xiao, Niels Asger Mortensen, Antti-Pekka Jauho
Surface-enhanced Raman spectroscopy (SERS) allows single-molecule detection due to the strong field localization occurring at sharp bends or kinks of the metal-vacuum interface. An…
Optical properties of graphene antidot lattices
Thomas G. Pedersen, Christian Flindt, Jesper Pedersen +3
Undoped graphene is semi-metallic and thus not suitable for many electronic and optoelectronic applications requiring gapped semiconductor materials. However, a periodic array of h…
Graphene Antidot Lattices - Designed Defects and Spin Qubits
Thomas G. Pedersen, Christian Flindt, Jesper Pedersen +3
Antidot lattices, defined on a two-dimensional electron gas at a semiconductor heterostructure, are a well-studied class of man-made structures with intriguing physical properties.…
Ab initio study of spin-dependent transport in carbon nanotubes with iron and vanadium adatoms
Joachim A. Fürst, Mads Brandbyge, Antti-Pekka Jauho +1
We present an ab initio study of spin dependent transport in armchair carbon nanotubes with transition metal adsorbates, iron or vanadium. We neglect the effect of tube curvature a…
Transport in Silicon Nanowires: Role of Radial Dopant Profile
Troels Markussen, Riccardo Rurali, Antti-Pekka Jauho +1
We consider the electronic transport properties of phosphorus (P) doped silicon nanowires (SiNWs). By combining ab initio density functional theory (DFT) calculations with a recurs…
Spin qubits in antidot lattices
Jesper Pedersen, Christian Flindt, Niels Asger Mortensen +1
We suggest and study designed defects in an otherwise periodic potential modulation of a two-dimensional electron gas as an alternative approach to electron spin based quantum info…
Designed defects in 2D antidot lattices for quantum information processing
Jesper Pedersen, Christian Flindt, Niels Asger Mortensen +1
We propose a new physical implementation of spin qubits for quantum information processing, namely defect states in antidot lattices defined in the two-dimensional electron gas at…
Counting Statistics of Non-Markovian Quantum Stochastic Processes
Christian Flindt, Tomas Novotny, Alessandro Braggio +2
We derive a general expression for the cumulant generating function (CGF) of non-Markovian quantum stochastic transport processes. The long-time limit of the CGF is determined by a…