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Transport signatures of quasiparticle poisoning in a Majorana island
S. M. Albrecht, E. B. Hansen, A. P. Higginbotham +7
We investigate effects of quasiparticle poisoning in a Majorana island with strong tunnel coupling to normal-metal leads. In addition to the main Coulomb blockade diamonds, "shadow…
Exponential Protection of Zero Modes in Majorana Islands
S. M. Albrecht, A. P. Higginbotham, M. Madsen +5
Majorana zero modes are quasiparticle excitations in condensed matter systems that have been proposed as building blocks of fault-tolerant quantum computers [1]. They are expected…
Parity lifetime of bound states in a proximitized semiconductor nanowire
A. P. Higginbotham, S. M. Albrecht, G. Kirsanskas +7
Quasiparticle excitations can compromise the performance of superconducting devices, causing high frequency dissipation, decoherence in Josephson qubits, and braiding errors in pro…
Coherence and Screening in Multi-Electron Spin Qubits
A. P. Higginbotham, F. Kuemmeth, M. P. Hanson +2
The performance of multi-electron spin qubits is examined by comparing exchange oscillations in coupled single-electron and multi-electron quantum dots in the same device. Fast (>…