Dynamics of Majorana-based qubits operated with an array of tunable gates
We study the dynamics of Majorana zero modes that are shuttled via local tuning of the electrochemical potential in a superconducting wire. By performing time-dependent simulations of microscopic lattice models, we show that diabatic corrections associated with the moving Majorana modes are quan...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SciPost
2018-07-01
|
| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.5.1.004 |
| Summary: | We study the dynamics of Majorana zero modes that are shuttled via local
tuning of the electrochemical potential in a superconducting wire. By
performing time-dependent simulations of microscopic lattice models, we show
that diabatic corrections associated with the moving Majorana modes are
quantitatively captured by a simple Landau-Zener description. We further
simulate a Rabi-oscillation protocol in a specific qubit design with four
Majorana zero modes in a single wire and quantify constraints on the timescales
for performing qubit operations in this setup. Our simulations utilize a
Majorana representation of the system, which greatly simplifies simulations of
superconductors at the mean-field level. |
|---|---|
| ISSN: | 2542-4653 |