公开(公告)号：US11100419B2

公开(公告)日：2021-08-24

申请号：US16867601

申请日：2020-05-06

申请人： Massachusetts Institute of Technology

发明人： Jagadeesh S. Moodera ,  Patrick A. Lee ,  Peng Wei ,  Sujit Manna

IPC分类号： H01L39/08 ,  G06N10/00 ,  H01L27/18 ,  H01L29/06 ,  B82Y10/00 ,  H01L39/12

摘要： Under certain conditions, a fermion in a superconductor can separate in space into two parts known as Majorana zero modes, which are immune to decoherence from local noise sources and are attractive building blocks for quantum computers. Here we disclose a metal-based heterostructure platform to produce these Majorana zero modes which utilizes the surface states of certain metals in combination with a ferromagnetic insulator and a superconductor. This platform has the advantage of having a robust energy scale and the possibility of realizing complex circuit designs using lithographic methods. The Majorana zero modes are interrogated using planar tunnel junctions and electrostatic gates to selectively tunnel into designated pairs of Majorana zero modes. We give example of qubit designs and circuits that are particularly suitable for the metal-based heterostructures.