Cyclic Depopulation of Edge States in a large Quantum Dot

Abstract

We investigate magneto-transport through a 1.6 μm wide quantum dot (QD) with adjacent charge detector, for different integer filling factors in the QD and constrictions. When this system is operated as a Fabry-Pérot interferometer, transport is governed by a Coulomb blockade mechanism. In the tunneling regime, we can directly measure the charge stability diagram of two capacitively and tunnel coupled Landau levels. This situation has been investigated in direct transport, as well as in single electron counting. The edge states within the dot are non-cyclically depopulated, which can be explained by a simple capacitive model and allows to draw conclusions about the edge state geometry within the quantum dot.

References in corpus (19)

• Non-Abelian Anyons and Topological Quantum Computation
• Single-shot read-out of an individual electron spin in a quantum dot
• Beyond paired quantum Hall states: parafermions and incompressible states in the first excited Landau level
• Topologically-Protected Qubits from a Possible Non-Abelian Fractional Quantum Hall State
• The Addition Spectrum of a Lateral Dot from Coulomb and Spin Blockade Spectroscopy
• Detecting Non-Abelian Statistics in the nu=5/2 Fractional Quantum Hall State
• Proposed experiments to probe the non-abelian ν=5/2 quantum Hall state
• Distinct Signatures For Coulomb Blockade and Aharonov-Bohm Interference in Electronic Fabry-Perot Interferometers
• Theory of the Fabry-Perot Quantum Hall Interferometer
• The Role of Interactions in an Electronic Fabry-Perot Interferometer Operating in the Quantum Hall Effect Regime
• Time-Resolved Detection of Individual Electrons in a Quantum Dot
• Counting statistics and super-Poissonian noise in a quantum dot
• Probing Non-Abelian Statistics with QuasiParticle Interferometry
• Fabry-Perot Interferometry with Fractional Charges
• Transport Properties of Clean Quantum Point Contacts
• Quantum transport in electron Fabry-Perot interferometers
• $nu=5/2$ Fractional Quantum Hall State in Low-Mobility Electron Systems: Different Roles of Disorder
• Coulomb blockade as a probe for non-Abelian statistics in Read-Rezayi states
• Multiple transitions of the spin configuration in quantum dots

Cited by in corpus (10)

• Aharonov-Bohm interference of fractional quantum Hall edge modes
• Flux superperiods and periodicity transitions in quantum Hall interferometers
• Interplay of fractional quantum Hall states and localization in quantum point contacts
• Observation of quantum Hall interferometer phase jumps due to changing quasiparticle number
• Resonant electron tunneling in a tip-controlled potential landscape
• Subperiods and apparent pairing in integer quantum Hall interferometers
• Electron-pairing in the quantum Hall regime due to neutralon exchange
• Transmission phase lapses through a quantum dot in a strong magnetic field
• Edge channel confinement in a bilayer graphene $n$-$p$-$n$ quantum dot
• Formation of spin droplet at nu = 5/2 in an asymmetric quantum dot under quantum Hall conditions