2011/09/02 by Grégory Strübi, Wolfgang Belzig, Mahn-Soo Choi +1 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Condensed matter physics #Fermion #Interferometry #MAJORANA #Noise (video) #Optics #Physics #Quantum many-body systems #Quantum mechanics #Shot noise #Superconductivity #Topological Materials and Phenomena #Topological insulator #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.107.136403
published as Phys. Rev. Lett. 107, 136403 (2011) · 5 pages, 2 figures
arxiv created 2011/09/02 · openalex publication_date 2011/09/23 · arxiv updated 2015/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Domain walls between superconducting and magnetic regions placed on top of a topological insulator support transport channels for Majorana fermions. We propose to study noise correlations in a Hanbury Brown-Twiss type interferometer and find three signatures of the Majorana nature of the channels. First, the average charge current in the outgoing leads vanishes. Furthermore, we predict an anomalously large shot noise in the output ports for a vanishing average current signal. Adding a quantum point contact to the setup, we find a surprising absence of partition noise which can be traced back to the Majorana nature of the carriers.