公开(公告)号：WO2019100017A1

公开(公告)日：2019-05-23

申请号：PCT/US2018/061849

申请日：2018-11-19

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： PIKULIN, Dmitry I.

IPC: G06N10/00

CPC classification number: G06N10/00 ,  H01L43/04 ,  H01L43/065 ,  H01L49/003 ,  H01L49/006

Abstract: This application concerns quantum computing, and in particular to structures and mechanisms for providing topologically protected quantum computation. In certain embodiments, a magnetic tunnel barrier is controlled that separates Majorona zero modes ("MZMs") from an edge area (e.g., a gapless edge) of a quantum spin hall system. In particular implementations, the magnetic tunnel barrier is formed from a pair of magnetic insulators whose magnetization is held constant, and the magnetic tunnel barrier is tuned by controlling a gate controlling the electron density around the magnetic insulator in the QSH plane, thereby forming a quantum dot. And, in some implementations, a state of the quantum dot is read out (e.g., using a charge sensor as disclosed herein).