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Internally engineered Majorana modes in twisted bilayer graphene

May 10, 2021 - 11:00am
Jason Alicea
California Institute of Technology

Twisted bilayer graphene (TBG) realizes an exquisitely tunable, strongly interacting system featuring superconductivity and various correlated insulating states.  In this talk I will introduce gate-defined wires in TBG as an enticing platform for Majorana-based fault-tolerant qubits.  Our proposal notably relies on “internally” generated superconductivity in TBG – as opposed to “external” superconducting proximity effects commonly employed in Majorana devices – and may operate even at zero magnetic field.  I will also describe how electrical measurements of gate-defined wires can reveal the nature of correlated insulators and shed light on the Cooper-pairing mechanism in TBG.  

We are hosting the Spring 2021 JQI Seminars virtually as Zoom meetings. JQI members and affiliates will receive a Zoom link in an email announcing each seminar. For those without access to Zoom, we will also be live streaming each seminar on YouTube. Once a seminar starts, you will find a link to the live stream on our YouTube page at is external).