Quantum Computing with Majorana Kramers Pairs

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Standard

Quantum Computing with Majorana Kramers Pairs. / Schrade, Constantin; Fu, Liang.

I: Physical Review Letters, Bind 129, Nr. 22, 227002, 23.11.2022.

Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt

Harvard

Schrade, C & Fu, L 2022, 'Quantum Computing with Majorana Kramers Pairs', Physical Review Letters, bind 129, nr. 22, 227002. https://doi.org/10.1103/PhysRevLett.129.227002

APA

Schrade, C., & Fu, L. (2022). Quantum Computing with Majorana Kramers Pairs. Physical Review Letters, 129(22), [227002]. https://doi.org/10.1103/PhysRevLett.129.227002

Vancouver

Schrade C, Fu L. Quantum Computing with Majorana Kramers Pairs. Physical Review Letters. 2022 nov. 23;129(22). 227002. https://doi.org/10.1103/PhysRevLett.129.227002

Author

Schrade, Constantin ; Fu, Liang. / Quantum Computing with Majorana Kramers Pairs. I: Physical Review Letters. 2022 ; Bind 129, Nr. 22.

Bibtex

@article{92b7f412686141d18c42a098de6bc69a,
title = "Quantum Computing with Majorana Kramers Pairs",
abstract = "We propose a universal gate set acting on a qubit formed by the degenerate ground states of a Coulomb-blockaded time-reversal invariant topological superconductor island with spatially separated Majorana Kramers pairs: the {"}Majorana Kramers qubit.{"}All gate operations are implemented by coupling the Majorana Kramers pairs to conventional superconducting leads. Interestingly, in such an all-superconducting device, the energy gap of the leads provides another layer of protection from quasiparticle poisoning independent of the island charging energy. Moreover, the absence of strong magnetic fields - which typically reduce the superconducting gap size of the island - suggests a unique robustness of our qubit to quasiparticle poisoning due to thermal excitations. Consequently, the Majorana Kramers qubit should benefit from prolonged coherence times and may provide an alternative route to a Majorana-based quantum computer.",
author = "Constantin Schrade and Liang Fu",
note = "Publisher Copyright: {\textcopyright} 2022 American Physical Society.",
year = "2022",
month = nov,
day = "23",
doi = "10.1103/PhysRevLett.129.227002",
language = "English",
volume = "129",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "22",

}

RIS

TY - JOUR

T1 - Quantum Computing with Majorana Kramers Pairs

AU - Schrade, Constantin

AU - Fu, Liang

N1 - Publisher Copyright: © 2022 American Physical Society.

PY - 2022/11/23

Y1 - 2022/11/23

N2 - We propose a universal gate set acting on a qubit formed by the degenerate ground states of a Coulomb-blockaded time-reversal invariant topological superconductor island with spatially separated Majorana Kramers pairs: the "Majorana Kramers qubit."All gate operations are implemented by coupling the Majorana Kramers pairs to conventional superconducting leads. Interestingly, in such an all-superconducting device, the energy gap of the leads provides another layer of protection from quasiparticle poisoning independent of the island charging energy. Moreover, the absence of strong magnetic fields - which typically reduce the superconducting gap size of the island - suggests a unique robustness of our qubit to quasiparticle poisoning due to thermal excitations. Consequently, the Majorana Kramers qubit should benefit from prolonged coherence times and may provide an alternative route to a Majorana-based quantum computer.

AB - We propose a universal gate set acting on a qubit formed by the degenerate ground states of a Coulomb-blockaded time-reversal invariant topological superconductor island with spatially separated Majorana Kramers pairs: the "Majorana Kramers qubit."All gate operations are implemented by coupling the Majorana Kramers pairs to conventional superconducting leads. Interestingly, in such an all-superconducting device, the energy gap of the leads provides another layer of protection from quasiparticle poisoning independent of the island charging energy. Moreover, the absence of strong magnetic fields - which typically reduce the superconducting gap size of the island - suggests a unique robustness of our qubit to quasiparticle poisoning due to thermal excitations. Consequently, the Majorana Kramers qubit should benefit from prolonged coherence times and may provide an alternative route to a Majorana-based quantum computer.

U2 - 10.1103/PhysRevLett.129.227002

DO - 10.1103/PhysRevLett.129.227002

M3 - Letter

C2 - 36493456

AN - SCOPUS:85143411554

VL - 129

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 22

M1 - 227002

ER -

ID: 343341976