Chiral Magnetic Josephson Junction as a Base for Low-Noise Superconducting Qubits
Abstract
The lack of space inversion symmetry endows non-centrosymmetric superconducting materials with various interesting parity-breaking phenomena, including the anomalous Josephson effect. Our paper considers a Josephson junction of two non-centrosymmetric superconductors connected by a uniaxial ferromagnet. We show that this “Chiral Magnetic Josephson junction” (CMJ junction) exhibits a direct analog of the Chiral Magnetic Effect, which has already been observed in Weyl and Dirac semimetals. We suggest that the CMJ can serve as an element of a qubit with a Hamiltonian tunable by the ferromagnet’s magnetization. The CMJ junction avoids using an offset magnetic flux in inductively shunted qubits, thus enabling a simpler and more robust architecture. Furthermore, when the uniaxial ferromagnet’s easy axis is directed across the junction, the resulting “chiral magnetic qubit” provides robust protection from the noise caused by magnetization fluctuations.
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1905335
- Alternate Identifier(s):
- OSTI ID: 1969917; OSTI ID: 2280531
- Report Number(s):
- BNL-224229-2023-JAAM
Journal ID: ISSN 2218-1997; UNIVB9; PII: universe8120657
- Grant/Contract Number:
- FG-88ER40388; AC02-98CH10886; SC-0017662; SC0012704; SC0017662; FG02-88ER40388
- Resource Type:
- Published Article
- Journal Name:
- Universe
- Additional Journal Information:
- Journal Name: Universe Journal Volume: 8 Journal Issue: 12; Journal ID: ISSN 2218-1997
- Publisher:
- MDPI AG
- Country of Publication:
- Switzerland
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; qubit; Josephson junction; topological semimetal; chiral magnetic effect
Citation Formats
Chernodub, Maxim N., Garaud, Julien, and Kharzeev, Dmitri E. Chiral Magnetic Josephson Junction as a Base for Low-Noise Superconducting Qubits. Switzerland: N. p., 2022.
Web. doi:10.3390/universe8120657.
Chernodub, Maxim N., Garaud, Julien, & Kharzeev, Dmitri E. Chiral Magnetic Josephson Junction as a Base for Low-Noise Superconducting Qubits. Switzerland. https://doi.org/10.3390/universe8120657
Chernodub, Maxim N., Garaud, Julien, and Kharzeev, Dmitri E. Wed .
"Chiral Magnetic Josephson Junction as a Base for Low-Noise Superconducting Qubits". Switzerland. https://doi.org/10.3390/universe8120657.
@article{osti_1905335,
title = {Chiral Magnetic Josephson Junction as a Base for Low-Noise Superconducting Qubits},
author = {Chernodub, Maxim N. and Garaud, Julien and Kharzeev, Dmitri E.},
abstractNote = {The lack of space inversion symmetry endows non-centrosymmetric superconducting materials with various interesting parity-breaking phenomena, including the anomalous Josephson effect. Our paper considers a Josephson junction of two non-centrosymmetric superconductors connected by a uniaxial ferromagnet. We show that this “Chiral Magnetic Josephson junction” (CMJ junction) exhibits a direct analog of the Chiral Magnetic Effect, which has already been observed in Weyl and Dirac semimetals. We suggest that the CMJ can serve as an element of a qubit with a Hamiltonian tunable by the ferromagnet’s magnetization. The CMJ junction avoids using an offset magnetic flux in inductively shunted qubits, thus enabling a simpler and more robust architecture. Furthermore, when the uniaxial ferromagnet’s easy axis is directed across the junction, the resulting “chiral magnetic qubit” provides robust protection from the noise caused by magnetization fluctuations.},
doi = {10.3390/universe8120657},
journal = {Universe},
number = 12,
volume = 8,
place = {Switzerland},
year = {Wed Dec 14 00:00:00 EST 2022},
month = {Wed Dec 14 00:00:00 EST 2022}
}
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