Periodic Reporting for period 3 - SiMS (Simulated Majorana states)
Periodo di rendicontazione: 2021-03-01 al 2022-08-31
The goal of the project is to investigate a novel direction in the creation of Majorana states, which is based on a linear array of quantum dots with superconducting leads. The key advantage of this physical implementation is the control of the device parameters, which will allow us to reproducibly map the topological phase diagram of the system. In order to achieve this overarching goal, we will utilize low frequency as well as microwave domain measurement techniques and will build our devices using narrow gap III-V semiconductors together with conventional metallic superconductors. Furthermore, we will investigate the non-locality of the Majorana bound states, and in doing so, we will demonstrate superconducting molecular states spanning between neighboring quantum dots.
In addition, we have also demonstrated that an on-chip refrigeration method can cool down nanoscale electronic devices to unprecedentedly low temperatures in the microkelvin regime. This achievement will be useful to reduce thermal fluctuations in upcoming measurements, and may facilitate more precise tuning of the underlying quantum states or allow for longer operation times.
The project team will now focus on the demonstration of the quantum non-locality and the measurement and mapping of the Majorana bound states with the final goal being the observation of their non-Abelian exchange statistics.