Minimal Kitaev-transmon qubit based on double quantum dots
D. Michel Pino, Rubén Seoane Souto, Ramón Aguado
DOI 10.1103/PhysRevB.109.075101 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Minimal Kitaev chains composed of two semiconducting quantum dots coupled via a superconductor have emerged as a promising platform to realize and study Majorana bound states (MBSs), which appear for fine-tuned configurations. We propose a hybrid qubit based on a Josephson junction between two such double quantum dots (DQDs) embedded in a superconducting qubit geometry. The qubit makes use of the 4π-Josephson effect in the Kitaev junction to create a subspace based on the even/odd fermionic parities of the two DQD arrays hosting MBSs. Deep in the transmon regime, we demonstrate that by performing circuit QED spectroscopy on such a hybrid Kitaev-transmon “Kitmon” qubit, one could observe distinct MBS features in perfect agreement with precise analytical predictions in terms of DQD parameters only. This agreement allows us to extract the Majorana polarization in the junction from the microwave response.
Similar papers
Minimal Kitaev-transmon qubit based on double quantum dots
similarity 0.94D. Michel Pino et al. · 2023 · arXiv:2309.12313
Source status unknown — claims are unverified
Minimal quantum dot based Kitaev chain with only local superconducting proximity effect
similarity 0.90William Samuelson et al.
Source status unknown — claims are unverified
Diabatic error and propagation of Majorana zero modes in interacting quantum dots systems
similarity 0.90Bradraj Pandey et al. · 2025 · arXiv:2501.06288
Source status unknown — claims are unverified
Braiding Majoranas in a linear quantum dot–superconductor array: Mitigating the errors from Coulomb repulsion and residual tunneling
similarity 0.90Sebastian Miles et al.
Source status unknown — claims are unverified
Procedure to tune a three-site artificial Kitaev chain to host Majorana bound states based on transmon measurements
similarity 0.90Xiaozhou Yang et al.
Source status unknown — claims are unverified
Effect of interatomic repulsion on Majorana zero modes in a coupled quantum-dot–superconducting-nanowire hybrid system
similarity 0.90R. Kenyi Takagui Pérez & A. A. Aligia
Source status unknown — claims are unverified