Domaines
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type de stage
Expérimental et théorique Description
Quantum technology leaders like Microsoft have invested heavily in Majorana Zero Modes (MZMs)
for topological qubits, exploiting their nonlocal nature to guard against decoherence. This promising
route, however, depends on intricate hybrid devices combining nanowires, quantum dots, and
superconducting gates. Such multi-material architectures demand extreme fabrication precision and
suffer from a gate count that grows linearly with qubit number, hindering scalability. Moreover,
Microsoft’s “Majorana 1” platform hosts static MZMs at nanowire ends, making the braiding operations
that reveal non-Abelian statistics particularly challenging.
In sharp contrast, our project offers a radically simpler and inherently scalable solution. Our approach
harnesses rhombohedral pentalayer graphene—a single, monolithic material—to host both chiral
topological superconductivity and the quantum anomalous Hall effect. This unified platform removes
the need for complex hybrid integration across disparate materials. Crucially, it realises 1D chiral
Majorana modes—“flying” quasiparticles that travel along defined paths—rather than static zero
modes. These propagating modes enable real-time control, dynamic manipulation, and braiding of
Majoranas.
Contact
Preden Roulleau