We construct a minimal circuit, based on the top-transmon design, to rotate a qubit formed out of four Majorana zero-modes at the edge of a two-dimensional topological insulator. Unlike braiding operations, generic rotations have no topological protection, but they do allow for a full characterization of the coherence times of the Majorana qubit. The rotation is controlled by variation of the flux through a pair of split Josephson junctions in a Cooper pair box, without any need to adjust gate voltages. The Rabi oscillations of the Majorana qubit can be monitored via oscillations in the resonance frequency of the microwave cavity that encloses the Cooper pair box.
Minimal circuit for a flux-controlled Majorana qubit in a quantum spin-Hall insulator / van Heck, B.; Hyart, T.; Beenakker, and C. W. J.. - In: PHYSICA SCRIPTA. - ISSN 1402-4896. - 2015:T164(2015). [10.1088/0031-8949/2015/T164/014007]
Minimal circuit for a flux-controlled Majorana qubit in a quantum spin-Hall insulator
B. van HeckPrimo
;
2015
Abstract
We construct a minimal circuit, based on the top-transmon design, to rotate a qubit formed out of four Majorana zero-modes at the edge of a two-dimensional topological insulator. Unlike braiding operations, generic rotations have no topological protection, but they do allow for a full characterization of the coherence times of the Majorana qubit. The rotation is controlled by variation of the flux through a pair of split Josephson junctions in a Cooper pair box, without any need to adjust gate voltages. The Rabi oscillations of the Majorana qubit can be monitored via oscillations in the resonance frequency of the microwave cavity that encloses the Cooper pair box.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.