AQP Seminar: Shot noise signatures of candidate states for the fractional quantum Hall state
speaker: Dr. Ankur Das, (Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati, India)
Host: Dr. Manohar Kumar
In this event, we are committed to Aalto University’s principles for a safer space.
Shot noise signatures of candidate states for the fractional quantum Hall state
Dr. Ankur Das (Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati, India)
Abstract: Fractional quantum Hall (FQH) states are highly sought after because of their ability to host non-Abelian anyons, whose braiding statistics make them excellent candidates for qubits in topological quantum computing. Multiple theoretical studies on the FQH state predict various quasiparticle states hosted by the plateau, which include parafermions and Majorana modes. In this work, we provide a systematic protocol to distinguish among four possible candidate wavefunctions of the plateau using zero-frequency shot noise experiments on a filter geometry. Qualitative comparisons of Fano factors provide a robust way to predict the candidate state across both the full and partial thermal equilibration regimes without prior knowledge of the experimental information, such as thermal equilibration length, allowing for more realistic experiments.
G. Vinjamuri and A. Das “Shot noise signatures of candidate states for the fractional quantum Hall = 12/5 state”, Phys. Rev. B 112, 155117 (2025)
This event is supported by InstituteQ, Finland's National Quantum Institute.