2011/06/30 by E. V. Deviatov, A. Ganczarczyk, Arkadius Ganczarczyk +4
Computer Science · Physics and Astronomy · #Astronomical interferometer #Enhanced Data Rates for GSM Evolution #Interference (communication) #Interferometric visibility #Interferometry #Landau quantization #Mach–Zehnder interferometer #Magnetic field #Optics #Physics #Quantum Hall effect #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Semiconductor Quantum Structures and Devices #Telecommunications #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.84.235313
published as Phys. Rev. B 84, 235313 (2011) · As accepted by PRB
arxiv created 2011/12/16 · openalex publication_date 2011/12/27 · arxiv updated 2015/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We experimentally realize a quantum Hall Mach-Zehnder interferometer that operates far beyond equilibrium. The operation of the interferometer is based on allowed intraedge elastic transitions within the same Landau sublevel in the regime of high imbalances between the copropagating edge states. Since every edge state is definitely connected with a certain Landau sublevel, the formation of the interference loop can be understood as a splitting and a further reconnection of a single edge state. We observe an Aharonov-Bohm type interference pattern even for small-size interferometers. This interference scheme demonstrates high visibility even at millivolt imbalances and survives in a wide temperature range.