762 citations
- University of AugsburgDE20 papers
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- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2 papers
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9 papers · 1 filter
Transport suppression in heterostructures driven by an ac gate voltage
Miguel Rey, Michael Strass, Sigmund Kohler +2
We explore the possibility of inducing in heterostructures driven by an ac gate voltage the coherent current suppression recently found for nanoscale conductors in oscillating fiel…
Coherence stabilization of a two-qubit gate by AC fields
Karen M. Fonseca Romero, Sigmund Kohler, Peter Hänggi
We consider a CNOT gate operation under the influence of quantum bit-flip noise and demonstrate that ac fields can change bit-flip noise into phase noise and thereby improve cohere…
Driven quantum transport on the nanoscale
Sigmund Kohler, Jörg Lehmann, Peter Hänggi
We explore the prospects to control by use of time-dependent fields quantum transport phenomena in nanoscale systems. In particular, we study for driven conductors the electron cur…
Spontaneous edge currents for the Dirac equation in two space dimensions
Michael J. Gruber, Marianne Leitner
Spontaneous edge currents are known to occur in systems of two space dimensions in a strong magnetic field. The latter creates chirality and determines the direction of the current…
Spin-Hall effect in a disordered 2D electron-system
Roberto Raimondi, Peter Schwab
We calculate the spin-Hall conductivity for a two-dimensional electron gas within the self-consistent Born approximation, varying the strength and type of disorder. In the weak dis…
Comment on "Magnetic response of Disordered Metallic Rings: Large Contributions of Far Levels"
U. Eckern, P. Schwab, V. Ambegaokar
Comment on cond-mat/0205390; PRL 90, 026805 (2003)