Resumé
Non-Hermitian exceptional points (EPs) represent a special type of degeneracy where not only the eigenvalues coalesce, but also the eigenstates tend to collapse on each other. Recent studies have shown that, in the presence of an EP, light-matter interactions are profoundly modified, leading to a host of unexpected optical phenomena ranging from enhanced sensitivity to chiral light transport. Here we introduce a family of unidirectional resonators based on a novel type of broadband exceptional points. In active settings, the resulting unidirectionality exhibits resilience to perturbations, thus, providing a robust and tunable approach for directly generating beams with distinct orbital angular momenta (OAM). This work could open up new possibilities for manipulating OAM degrees of freedom in applications pertaining to telecommunications and quantum information sciences, while at the same time may expand the notions of non-Hermiticity in the orbital angular momentum space.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | ACS Photonics |
| Vol/bind | 6 |
| Udgave nummer | 8 |
| Sider (fra-til) | 1895-1901 |
| ISSN | 2330-4022 |
| DOI | |
| Status | Udgivet - 21. aug. 2019 |
Fingeraftryk
Citer dette
}
Direct Generation of Tunable Orbital Angular Momentum Beams in Microring Lasers with Broadband Exceptional Points. / Hayenga, William E.; Parto, Midya; Ren, Jinhan; Wu, Fan O.; Hokmabadi, Mohammad P.; Wolff, Christian; El-Ganainy, Ramy; Mortensen, N. Asger; Christodoulides, Demetrios N.; Khajavikhan, Mercedeh.
I: ACS Photonics, Bind 6, Nr. 8, 21.08.2019, s. 1895-1901.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
TY - JOUR
T1 - Direct Generation of Tunable Orbital Angular Momentum Beams in Microring Lasers with Broadband Exceptional Points
AU - Hayenga, William E.
AU - Parto, Midya
AU - Ren, Jinhan
AU - Wu, Fan O.
AU - Hokmabadi, Mohammad P.
AU - Wolff, Christian
AU - El-Ganainy, Ramy
AU - Mortensen, N. Asger
AU - Christodoulides, Demetrios N.
AU - Khajavikhan, Mercedeh
PY - 2019/8/21
Y1 - 2019/8/21
N2 - Non-Hermitian exceptional points (EPs) represent a special type of degeneracy where not only the eigenvalues coalesce, but also the eigenstates tend to collapse on each other. Recent studies have shown that, in the presence of an EP, light-matter interactions are profoundly modified, leading to a host of unexpected optical phenomena ranging from enhanced sensitivity to chiral light transport. Here we introduce a family of unidirectional resonators based on a novel type of broadband exceptional points. In active settings, the resulting unidirectionality exhibits resilience to perturbations, thus, providing a robust and tunable approach for directly generating beams with distinct orbital angular momenta (OAM). This work could open up new possibilities for manipulating OAM degrees of freedom in applications pertaining to telecommunications and quantum information sciences, while at the same time may expand the notions of non-Hermiticity in the orbital angular momentum space.
AB - Non-Hermitian exceptional points (EPs) represent a special type of degeneracy where not only the eigenvalues coalesce, but also the eigenstates tend to collapse on each other. Recent studies have shown that, in the presence of an EP, light-matter interactions are profoundly modified, leading to a host of unexpected optical phenomena ranging from enhanced sensitivity to chiral light transport. Here we introduce a family of unidirectional resonators based on a novel type of broadband exceptional points. In active settings, the resulting unidirectionality exhibits resilience to perturbations, thus, providing a robust and tunable approach for directly generating beams with distinct orbital angular momenta (OAM). This work could open up new possibilities for manipulating OAM degrees of freedom in applications pertaining to telecommunications and quantum information sciences, while at the same time may expand the notions of non-Hermiticity in the orbital angular momentum space.
KW - chirality
KW - exceptional point
KW - microresonator
KW - microring laser
KW - non-Hermitian
KW - orbital angular momentum
U2 - 10.1021/acsphotonics.9b00779
DO - 10.1021/acsphotonics.9b00779
M3 - Journal article
VL - 6
SP - 1895
EP - 1901
JO - A C S Photonics
JF - A C S Photonics
SN - 2330-4022
IS - 8
ER -