Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session B42: Topological Bands and Nonlinearity
11:30 AM–1:30 PM,
Monday, March 6, 2023
Room: Room 318
Sponsoring
Unit:
DMP
Chair: Wonhee Ko, University of Tennessee, Knoxville
Abstract: B42.00004 : Distributed topological zero modes in a Non Hermitian quantum system
12:06 PM–12:18 PM
Presenter:
Sayan Jana
(Tel Aviv University)
Authors:
Lea Sirota
(Tel Aviv University)
Sayan Jana
(Tel Aviv University)
faster propagation of wave packets in contrast to Hermitian counterparts, non-reciprocal
wave guiding, etc. In general, non-reciprocity can be tailored through unequal directional
hopping between two different sites and also via onsite gain/loss balancing. The goal of this
research is to examine the impact of both non-hermitian constitutive parameters, i.e
directionality and gain/loss, in a coupled one-dimensional (1D) double-chain network. The
directional hopping in a 1D system causes the localization of bulk modes at the boundaries,
known as non-Hermitian skin effect (NHSE), whereas the precise tuning of the gain/loss
parameters leads to a complete delocalization of zero modes connecting NHSE at the two
ends. This transition of zero modes from localised to delocalized state is well protected by
bulk topology and also characterized through a change in topological invariant.
Finally, a one-way invisible complete transmission phenomenon has been demonstrated
across this network using wavepacket tunnelling.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700