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SUMMARY:Non-Abelian braiding of phonons in layered silicates - Bo Peng
DTSTART:20210602T103000Z
DTEND:20210602T113000Z
UID:TALK160174@talks.cam.ac.uk
CONTACT:Chuck Witt
DESCRIPTION:One of the most promising ideas for the realization of topolog
 ical\nqubits relies on non-Abelian anyons. However\, the extremely subtle\
 nconditions to detect the Majorana bound states hamper technologically\nre
 levant applications. Here we propose that phonons\, a bosonic\nexcitation\
 , can realize momentum space braiding of band nodes that carry\nnon-Abelia
 n charges [1]. Different from electronic systems\, phonons do\nnot have th
 e constraints placed by the Fermi-Dirac distribution that\nhave so far pre
 vented the experimental observation of multi-gap\ntopologies in real mater
 ials. We find a promising material family\,\nlayered silicates that are ub
 iquitous in soils and minerals throughout\nthe world\, to study the non-Ab
 elian braiding of phonons. The associated\nbraiding process can be control
 led by means of an electric field and\nepitaxial strain\, and involves\, f
 or the first time\, more than three\nbands. Finally\, we propose that thes
 e conversion processes can be\ntracked by following the evolution of the R
 aman spectrum\, providing a\nclear signature for the experimental verifica
 tion of multi-gap\ntopologies.\n\nReference:\n[1] B Peng\, A Bouhon\, B Mo
 nserrat\, RJ Slager. Non-Abelian braiding of\nphonons in layered silicates
 . arXiv:2105.08733
LOCATION:Zoom
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