Tuesday, Oct 9th: Discovery of the chiral Majorana fermion and its application to topological quantum computing

Event Date: 

Tuesday, October 9, 2018 - 3:45pm

Event Date Details: 

Refreshments will be served at 3:30pm

Event Location: 

  • Broida 1640
  • Physics Dept. Colloquium

Majorana fermion is a hypothetical fermionic particle which is its own anti-particle.

Intense research efforts focus on its experimental observation as a fundamental particle

in high energy physics and as a quasi-particle in condensed matter systems.

We have theoretically predicted the chiral Majorana fermion in a hybrid structure

of quantum anomalous Hall thin film coupled with a conventional superconductor, and

have proposed the half-integer quantized conductance plateau as its compelling

signature. Recently, this theoretical prediction has been experimentally realized

in magnetically doped topological insulator coupled with Nb superconductor and the

half plateau quantization has been observed. I shall discuss a new proposal to braid

the chiral Majorana fermion in a Corbino device geometry. The

discovery of the chiral Majorana fermion leads to new avenues towards topological

quantum computing, which could be much faster compared to Majorana zero modes.