All-electrically reading out and initializing topological qubits with quantum dots
Mesoscale and Nanoscale Physics
2015-06-15 v1 Superconductivity
Quantum Physics
Abstract
We analyze the reading and initialization of a topological qubit encoded by Majorana fermions in one-dimensional semiconducting nanowires, weakly coupled to a single level quantum dot (QD). It is shown that when the Majorana fermions are fused by tuning gate voltage, the topological qubit can be read out directly through the occupation of the QD in an energy window. The initialization of the qubit can also be realized via adjusting the gate voltage on the QD, with the total fermion parity conserved. As a result, both reading and initialization processes can be achieved in an all-electrical way.
Keywords
Cite
@article{arxiv.1304.1257,
title = {All-electrically reading out and initializing topological qubits with quantum dots},
author = {Wei Chen and Zheng-Yuan Xue and Z. D. Wang and R. Shen and D. Y. Xing},
journal= {arXiv preprint arXiv:1304.1257},
year = {2015}
}