Majorana zero modes and topological quantum computation
We provide a current perspective on the rapidly developing field of Majorana zero modes
(MZMs) in solid-state systems. We emphasise the theoretical prediction, experimental
realisation and potential use of MZMs in future information processing devices through
braiding-based topological quantum computation (TQC). Well-separated MZMs should
manifest non-Abelian braiding statistics suitable for unitary gate operations for TQC. Recent
experimental work, following earlier theoretical predictions, has shown specific signatures …
(MZMs) in solid-state systems. We emphasise the theoretical prediction, experimental
realisation and potential use of MZMs in future information processing devices through
braiding-based topological quantum computation (TQC). Well-separated MZMs should
manifest non-Abelian braiding statistics suitable for unitary gate operations for TQC. Recent
experimental work, following earlier theoretical predictions, has shown specific signatures …
Abstract
We provide a current perspective on the rapidly developing field of Majorana zero modes (MZMs) in solid-state systems. We emphasise the theoretical prediction, experimental realisation and potential use of MZMs in future information processing devices through braiding-based topological quantum computation (TQC). Well-separated MZMs should manifest non-Abelian braiding statistics suitable for unitary gate operations for TQC. Recent experimental work, following earlier theoretical predictions, has shown specific signatures consistent with the existence of Majorana modes localised at the ends of semiconductor nanowires in the presence of superconducting proximity effect. We discuss the experimental findings and their theoretical analyses, and provide a perspective on the extent to which the observations indicate the existence of anyonic MZMs in solid-state systems. We also discuss fractional quantum Hall systems (the 5/2 state), which have been extensively studied in the context of non-Abelian anyons and TQC. We describe proposed schemes for carrying out braiding with MZMs as well as the necessary steps for implementing TQC.
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