中国物理B ›› 2014, Vol. 23 ›› Issue (3): 30309-030309.doi: 10.1088/1674-1056/23/3/030309
陈伟a b, 薛正远b c, 汪子丹b, 沈瑞a
Chen Wei (陈伟)a b, Xue Zheng-Yuan (薛正远)b c, Wang Z. D.(汪子丹)b, Shen Rui (沈瑞)a
摘要: 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.
中图分类号: (Quantum computation architectures and implementations)