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- W2897984238 abstract "We study the lifetime of topological qubits based on Majorana bound states hosted in a one-dimensional Rashba nanowire (NW) with proximity-induced superconductivity and nonuniform chemical potential needed for manipulation and readout. If nearby gates tune the chemical potential locally so that part of the NW is in the trivial phase, Andreev bound states (ABSs) can emerge which are localized at the interface between topological and trivial phases with energies significantly less than the gap. The emergence of such subgap states decreases the Majorana qubit lifetime at finite temperatures due to local perturbations that can excite the system into these ABSs. Using the Keldysh formalism, we study such excitations caused by fluctuating charges in capacitively coupled gates and calculate the corresponding Majorana lifetimes due to thermal noise, which are shown to be reduced in comparison with those in NWs with uniform chemical potential." @default.
- W2897984238 created "2018-10-26" @default.
- W2897984238 creator A5010879789 @default.
- W2897984238 creator A5041982379 @default.
- W2897984238 creator A5063167141 @default.
- W2897984238 date "2018-10-12" @default.
- W2897984238 modified "2023-09-23" @default.
- W2897984238 title "Lifetime of Majorana qubits in Rashba nanowires with nonuniform chemical potential" @default.
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- W2897984238 doi "https://doi.org/10.1103/physrevb.98.155414" @default.
- W2897984238 hasPublicationYear "2018" @default.
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