Quantum Hall Mach-Zehnder interferometer at fractional filling factors

Abstract

We use a Mach-Zehnder quantum Hall interferometer of a novel design to investigate the interference effects at fractional filling factors. Our device brings together the advantages of usual Mach-Zehnder and Fabry-Perot quantum Hall interferometers. It realizes the simplest-for-analysis Mach-Zehnder interference scheme, free from Coulomb blockade effects. By contrast to the standard Mach-Zehnder realization, our device does not contain an etched region inside the interference loop. For the first time for Mach-Zehnder interference scheme, the device demonstrates interference oscillations with ${\Phi }^{\ast }=e/e^{\ast }{\Phi }_0={\Phi }_0/\nu$ periodicity at fractional filling factor 1/3. This result indicates that we observe clear evidence for fractionally charged quasiparticles from simple Aharonov-Bohm interference.

as accepted to EPL

References in corpus (9)

• Anyons and the quantum Hall effect - a pedagogical review
• Direct measurement of the coherence length of edge states in the Integer Quantum Hall Regime
• Decoherence and single electron charging in an electronic Mach-Zehnder interferometer
• Primary-Filling e/3 Quasiparticle Interferometer
• Fabry-Perot Interferometry with Fractional Charges
• Quantum transport in electron Fabry-Perot interferometers
• Electron interferometry in quantum Hall regime: Aharonov-Bohm effect of interacting electrons
• Filling factor dependence of the fractional quantum Hall effect gap
• Separately contacted edge states at high imbalance in the integer and fractional quantum Hall effect regime

Cited by in corpus (12)

• Fractional charge and fractional statistics in the quantum Hall effects
• Interference induced thermoelectric switching and heat rectification in quantum Hall junctions
• Anyons in Quantum Hall Interferometry
• The sixteenfold way and the quantum Hall effect at half-integer filling factors
• Two-particle time-domain interferometry in the Fractional Quantum Hall Effect regime
• Nanoscale Mach-Zehnder interferometer with spin-resolved quantum Hall edge states
• Interactions in Electronic Mach-Zehnder Interferometers with Copropagating Edge Channels
• Anyonic Mach-Zehnder interferometer on a single edge of a 2D electron gas
• Gate controlled unitary operation on flying spin qubits in quantum Hall edge states
• Landscapes of an out-of-equilibrium anyonic sea
• Half-mirror for electrons on quantum Hall copropagating edge channels
• Anyonic analogue of optical Mach-Zehnder interferometer