Non-Hermitian dynamics and non-reciprocity of optically coupled nanoparticles

Autor(en)

Manuel Reisenbauer, Henning Rudolph, Livia Egyed, Klaus Hornberger, Anton V. Zasedatelev, Murad Abuzarli, Benjamin A. Stickler, Uroš Delić

Abstrakt

Non-Hermitian dynamics, as observed in photonic, atomic, electrical and optomechanical platforms, holds great potential for sensing applications and signal processing. Recently, fully tuneable non-reciprocal optical interaction has been demonstrated between levitated nanoparticles. Here we use this tunability to investigate the collective non-Hermitian dynamics of two non-reciprocally and nonlinearly interacting nanoparticles. We observe parity–time symmetry breaking and, for sufficiently strong coupling, a collective mechanical lasing transition in which the particles move along stable limit cycles. This work opens up a research avenue of non-equilibrium multi-particle collective effects, tailored by the dynamic control of individual sites in a tweezer array.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Universität Duisburg-Essen, Universität Ulm

Journal

Nature Physics

Band

20

Seiten

1629–1635

Anzahl der Seiten

7

ISSN

1745-2473

DOI

https://doi.org/10.1038/s41567-024-02589-8

Publikationsdatum

07-2024

Peer-reviewed

Ja

ÖFOS 2012

103021 Optik, 103029 Statistische Physik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/3b08eef8-832a-4643-83bd-f9315f94cf72