Parity-spin superconducting qubit based on topological insulators

We propose to utilize two parity-protected qubits which are built based on superconductor/topological-insulator/superconductor (SC/TI/SC) Josephson junction to implement a parity-spin superconducting qubit. The SC/TI/SC Josephson junctions have identical Josephson potential, which is robust against...

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Bibliographic Details
Published in:New journal of physics 2024-06, Vol.26 (6), p.063005
Main Authors: Guo, Guo-Liang, Leng, Han-Bing, Liu, Xin
Format: Article
Language:English
Subjects:
Andreev levels
Electrons
Josephson effect
Josephson junctions
Parity
Qubits (quantum computing)
superconducting qubit
Superconductivity
topological insulator
Topological insulators
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Summary:We propose to utilize two parity-protected qubits which are built based on superconductor/topological-insulator/superconductor (SC/TI/SC) Josephson junction to implement a parity-spin superconducting qubit. The SC/TI/SC Josephson junctions have identical Josephson potential, which is robust against fabrication variations and guarantees the reliable cos 2ϕ energy-phase relation for implementing a parity-protected qubit. By viewing the even and odd parity ground states of a single parity-protected qubit as spin-1
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ad4b58