Time scales for Majorana manipulation using Coulomb blockade in gate-controlled superconducting nanowires
Michael Hell, Jeroen Danon, Karsten Flensberg, Martin Leijnse
DOI 10.1103/PhysRevB.94.035424 · 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
We numerically compute the low-energy spectrum of a gate-controlled superconducting topological nanowire segmented into two islands, each Josephson coupled to a bulk superconductor. This device may host two pairs of Majorana bound states and could provide a platform for testing Majorana fusion rules. We analyze the crossover between (i) a charge-dominated regime utilizable for initialization and readout of Majorana bound states, (ii) a single-island regime for dominating interisland Majorana coupling, (iii) a Josephson-plasmon regime for large coupling to the bulk superconductors, and (iv) a regime of four Majorana bound states allowing for topologically protected Majorana manipulations. From the energy spectrum, we derive conservative estimates for the time scales of a fusion-rule testing protocol proposed recently (D. Aasen et al., arXiv:1511.05153). We also analyze the steps needed for basic Majorana braiding operations in branched nanowire structures.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Majorana Bound States and Nonlocal Spin Correlations in a Quantum Wire on an Unconventional Superconductor
similarity 0.96Sho Nakosai et al.
Source status unknown — claims are unverified
Spin and Majorana Polarization in Topological Superconducting Wires
similarity 0.95Doru Sticlet et al.
Source status unknown — claims are unverified
Majorana fermion states and fractional flux periodicity in mesoscopic d-wave superconducting loops with spin-orbit interaction
similarity 0.95Guo-Qiao Zha et al.
Source status unknown — claims are unverified
Observing Majorana bound States in p-Wave Superconductors Using Noise Measurements in Tunneling Experiments
similarity 0.95C. J. Bolech & Eugene Demler
Source status unknown — claims are unverified
Understanding Majorana braiding in superconductors with a fixed total number of particles
similarity 0.95Ivar Martin & Kartiek Agarwal
Source status unknown — claims are unverified
Tunneling of anyonic Majorana excitations in topological superconductors
similarity 0.95Meng Cheng et al.
Source status unknown — claims are unverified