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TZID:Asia/Kolkata
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TZOFFSETFROM:+0530
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DTSTART:20210101T000000
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DTSTART;TZID=Asia/Kolkata:20221125T100000
DTEND;TZID=Asia/Kolkata:20221125T120000
DTSTAMP:20221116T001323Z
CREATED:20221115T232201Z
LAST-MODIFIED:20221116T001323Z
UID:37642-1669370400-1669377600@www.ashoka.edu.in
SUMMARY:Dynamical construction of Quadrupolar and Octupolar topological superconductors
DESCRIPTION:Abstract:  We propose a three-step periodic drive protocol to engineer two-dimensional~(2D) Floquet quadrupole superconductors and three-dimensional~(3D) Floquet octupole superconductors hosting zero-dimensional Majorana corner modes~(MCMs)\, based on unconventional d-wave superconductivity. Remarkably\, the driven system conceives four phases with only 0 MCMs\, no MCMs\, only anomalous π MCMs\, and both regular 0 and anomalous π MCMs. To circumvent the subtle issue of characterizing 0 and π MCMs separately\, we employ the periodized evolution operator to architect the dynamical invariants\, namely quadrupole and octupole motion in 2D and 3D\, respectively\, that can distinguish different higher-order topological phases unambiguously. Our study paves the way for the realization of dynamical quadrupolar and octupolar topological superconductors. Ref: Phys. Rev. B 105\, 155406 (2022) \nSpeaker Bio: Prof Tanay Nag (https://scholar.google.com/citations?user=2vUWoTAAAAAJ&hl=en) pursuing his fourth postdoc at Uppsala University.  He finished his Ph.D. in quantum information with Prof. Amit Dutta from IIT Kanpur. He is now working on topological systems and their out-of-equilibrium counterparts. 
URL:https://www.ashoka.edu.in/event/dynamical-construction-of-quadrupolar-and-octupolar-topological-superconductors/
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