Majorana zero-modes in a dissipative Rashba nanowire

• DOI: 10.48550/arxiv.2403.00419
• Publication Date: 2024-08-07
• Authors: Arnob Kumar Ghosh; Annica M. Black-S...
• Keywords: 0301 basic medicine; Quantum Physics; Condensed Matter - Mesoscale and Nanoscale Physics; Physics; QC1-999; Condensed Matter - Superconductivity; FOS: Physical sciences; Condensed Matter Physics; Superconductivity (cond-mat.supr-con); 03 medical and health sciences; Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Quantum Physics (quant-ph); Den kondenserade materiens fysik

Condensed matter systems are continuously subjected to dissipation, which often has adverse effects on quantum phenomena. We focus on the impact of dissipation on a superconducting Rashba nanowire. We reveal that the system can still host Majorana zero-modes (MZMs) with a finite lifetime in the presence of dissipation. Most interestingly, dissipation can also generate two kinds of dissipative boundary states: four robust zero-modes (RZMs) and two MZMs, in the regime where the non-dissipative system is topologically trivial. The MZMs appear via bulk gap closing and are topologically characterized by a winding number. The RZMs are not associated with any bulk states and possess no winding number, but their emergence is instead tied to exceptional points. Further, we confirm the stability of the dissipation-induced RZMs and MZMs in the presence of random disorder. Our study paves the way for both realizing and stabilizing MZMs in an experimental setup, driven by dissipation.