ac Josephson Effect in Finite-Length Nanowire Junctions with Majorana Modes
Pablo San-Jose, Elsa Prada, Ramón Aguado
DOI 10.1103/PhysRevLett.108.257001 · Physical Review Letters
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
It has been predicted that superconducting junctions made with topological nanowires hosting Majorana bound states (MBS) exhibit an anomalous 4π-periodic Josephson effect. Finding an experimental setup with these unconventional properties poses, however, a serious challenge: for finite-length wires, the equilibrium supercurrents are always 2π periodic as anticrossings of states with the same fermionic parity are possible. We show, however, that the anomaly survives in the transient regime of the ac Josephson effect. Transients are, moreover, protected against decay by quasiparticle poisoning as a consequence of the quantum Zeno effect, which fixes the parity of Majorana qubits. The resulting long-lived ac Josephson transients may be effectively used to detect MBS.
Similar papers
Energy spectrum and current-phase relation of a nanowire Josephson junction close to the topological transition
similarity 0.93Chaitanya Murthy et al.
Source status unknown — claims are unverified
Fractional Josephson effect with and without Majorana zero modes
similarity 0.93Ching-Kai Chiu & S. Das Sarma
Source status unknown — claims are unverified
Robustness of Majorana fermion induced fractional Josephson effect in multichannel superconducting wires
similarity 0.91K. T. Law & Patrick A. Lee
Source status unknown — claims are unverified
Fractional Josephson Effect with and without Majorana Zero Modes
similarity 0.91Ching-Kai Chiu & S. Das Sarma · 2018 · arXiv:1806.02224
Source status unknown — claims are unverified
Josephson effect in multiterminal topological junctions
similarity 0.91A. Zazunov et al.
Source status unknown — claims are unverified
Theory of topological spin Josephson junctions
similarity 0.91Pei-Xin Shen et al.
Source status unknown — claims are unverified