Engineering and Technology

Observation of anti-parity-time-symmetry, phase transitions and exceptional points in an optical fibre

A. Bergman, R. Duggan, et al.

This groundbreaking research, conducted by Arik Bergman, Robert Duggan, Kavita Sharma, Moshe Tur, Avi Zadok, and Andrea Alù, showcases anti-parity-time symmetric phase transitions and exceptional point singularities in single-mode optical fiber. The study demonstrates precise control over non-Hermitian parameters and reveals a fascinating response to changes in Brillouin frequency shifts.

00:00

Playback language: English

Index

Abstract

This work demonstrates anti-parity-time symmetric phase transitions and exceptional point singularities in a single-mode optical fiber using off-the-shelf components. Two propagating signals are amplified and coupled through stimulated Brillouin scattering, offering precise control over non-Hermitian parameters. Experimental results show singular response to small-scale variations and topological features around the exceptional point, enabling enhanced response to Brillouin frequency shift changes.

Publisher

Nature Communications

Published On

Jan 20, 2021

Authors

Arik Bergman, Robert Duggan, Kavita Sharma, Moshe Tur, Avi Zadok, Andrea Alù

Related Publications

Explore these studies to deepen your understanding of the subject.

Education

Institutional structure and governance capability in universities: an empirical study from the perspectives of time, space, and quantity dimensions

Z. Luo, M. Junfeng, et al.

Political Science

Joint liability and aggravation? An inspection of legislative and judicial practices in cases of the crime of the abduction, sale, and purchase of women and children in China

D. Wang

Physics

Reshaped three-body interactions and the observation of an Efimov state in the continuum

Y. Yudkin, R. Elbaz, et al.

Medicine and Health

A pilot randomized controlled trial investigating the effects of an anti-inflammatory dietary pattern on disease activity, symptoms and microbiota profile in adults with inflammatory bowel disease

A. Marsh, V. Chachay, et al.

Listen, Learn & Level Up

Over 10,000 hours of research content in 25+ fields, available in 12+ languages.

No more digging through PDFs, just hit play and absorb the world's latest research in your language, on your time.

listen to research audio papers with researchbunny