Clemens Neuenhahn and Florian Marquardt 2008 New J. Phys. 10 115018 doi:10.1088/1367-2630/10/11/115018
Dephasing by electron–electron interactions in a ballistic Mach–Zehnder interferometer
Focus on Quantum Dissipation in Unconventional EnvironmentsClemens Neuenhahn and Florian Marquardt
Show affiliationsPart of Focus on Quantum Dissipation in Unconventional Environments
We consider a ballistic Mach–Zehnder interferometer for electrons propagating chirally in one dimension (such as in an integer quantum Hall effect edge channel). In such a system, dephasing occurs when the finite range of the interaction potential is taken into account. Using the tools of bosonization, we discuss the decay of coherence as a function of propagation distance and energy. We supplement the exact solution by a semiclassical approach that is physically transparent and is exact at high energies. In particular, we study in more detail the recently predicted universal power-law decay of the coherence at high energies, where the exponent does not depend on the interaction strength. In addition, we compare against Keldysh perturbation theory, which works well for small interaction strength at short propagation distances.
- PACS
- Subjects
- Dates
-
Issue 11 (November 2008)
Received 18 June 2008
Published 20 November 2008
-
Dephasing by electron–electron interactions in a ballistic Mach–Zehnder interferometer
Clemens Neuenhahn and Florian Marquardt 2008 New J. Phys. 10 115018
-
Linking optical and infrared observations with gravitational wave sources through transient variability
C W Stubbs 2008 Class. Quantum Grav. 25 184033
-
Implementation of standard testbeds for numerical relativity
M C Babiuc et al 2008 Class. Quantum Grav. 25 125012
-
Interplay between electronic states and structure during Au faceting
F Schiller et al 2008 New J. Phys. 10 113017
-
Fermions in loop quantum cosmology and the role of parity
Martin Bojowald and Rupam Das 2008 Class. Quantum Grav. 25 195006
-
Semiconductor to metal transition in SWNTs caused by interaction with gold and platinum nanoparticles
Rakesh Voggu et al 2008 J. Phys.: Condens. Matter 20 215211
-
Angular diffraction
B Jack et al 2008 New J. Phys. 10 103013
-
The LSC glitch group: monitoring noise transients during the fifth LIGO science run
L Blackburn et al 2008 Class. Quantum Grav. 25 184004
-
Interaction between carbon nanotubes and mammalian cells: characterization by flow cytometry and application
Dong Cai et al 2008 Nanotechnology 19 345102
-
Baryon enhancement in high-density QCD and relativistic heavy ion collisions
Yang Li 2008 J. Phys. G: Nucl. Part. Phys. 35 104051
Users also read
What's this?- How computers can help us in creating an intuitive access to relativity
- Probing molecule–surface interactions through ultra-fast adsorbate dynamics: propane/Pt(111)
- Surface structure of Sn-doped In2O3 (111) thin films by STM
Related review articles
What's this?- Quantum Hall effects in graphene-based two-dimensional electron systems
- Disordered topological insulators: a non-commutative geometry perspective
- Electron dynamics in inhomogeneous magnetic fields