Abstract: 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.
Bio: Jason Alicea received his PhD from UC Santa Barbara in 2007 and then held a postdoc fellowship at Caltech. In 2010 he joined the faculty at UC Irvine before returning to Caltech as a professor in 2012. His research explores novel phases of matter in various physical settings, often motivated by fault-tolerant quantum computing applications.
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2021-09-23T10:00:002021-09-23T11:00:00Internally engineered Majorana modes in twisted bilayer grapheneEvent Information:
https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09
Meeting ID: 668 7999 5529
Passcode: 113399
Abstract: 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.
Bio: Jason Alicea received his PhD from UC Santa Barbara in 2007 and then held a postdoc fellowship at Caltech. In 2010 he joined the faculty at UC Irvine before returning to Caltech as a professor in 2012. His research explores novel phases of matter in various physical settings, often motivated by fault-tolerant quantum computing applications.Event Location:
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