Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session Q33: Non-Equilibrium Physics with Cold Atoms and Molecules, Rydberg Gases, and Trapped Ions III
3:00 PM–5:48 PM,
Wednesday, March 16, 2022
Room: McCormick Place W-192C
Sponsoring
Units:
DAMOP DCMP
Chair: Padetha Tin, NASA Glenn Research Center
Abstract: Q33.00005 : Enhanced sensing of anharmonic perturbations in a dissipatively coupled anti-PT symmetric system.*
3:48 PM–4:00 PM
Presenter:
Jayakrishnan Muttathil Prabhakarapada Nair
(Texas A&M University)
Authors:
Jayakrishnan Muttathil Prabhakarapada Nair
(Texas A&M University)
Debsuvra Mukhopadhyay
(Texas A&M University)
Girish S Agarwal
(Texas A&M University)
Here, we demonstrate a new protocol for the enhanced sensing of linear and nonlinear perturbations based on a dissipatively coupled two-mode system with anti-PT symmetry. The sensitivity stems from the coherence between the modes induced by a shared reservoir. Owing to the dissipative coupling between the modes, the linear response acquires a pole on the real axis. We demonstrate how this singularity can be exploited for the enhanced sensing of weak perturbations at low pump powers. Our model is generic, relevant to a large class of physical systems, and the mechanism is specifically illustrated in the context of a cavity interacting dissipatively with a ferromagnet.
*We gratefully acknowledge the support of The Air Force Office of Scientific Research, The Robert A. Welch Foundation and the HEEP fellowship.
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. |
© 2025 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