Collective-State Preparation in a Subwavelength Triangular Trimer Using SUPER Excitation
Abstract
The Swing-UP of quantum EmitteR population (SUPER) scheme has recently been proposed as a deterministic method for the preparation of collective radiative states in two strongly dipole-coupled quantum emitters (Phys. Rev. Res. \textbf{8}, 013179 (2026)). Here, we apply this approach to an equilateral subwavelength triangular trimer of dipole-coupled two-level quantum emitters (QEs), loosely inspired by biological light-harvesting ring geometries, and demonstrate that tailored, time-overlapping, red-detuned ultrashort SUPER pulses can selectively prepare collective states in a C3-symmetric system, including energetically degenerate eigenstates that are resolved through site-dependent optical phases. We find that both the state selectivity and the preparation efficiency depend strongly on the inter-emitter spacing. In particular, at deep-subwavelength separations, the symmetric collective state can be deterministically prepared with near-unity efficiency (approximately 94%), whereas the inversion efficiency and state selectivity are significantly lower at larger inter-emitter separations. Furthermore, this state preparation technique inherits a certain degree of robustness against reasonable static position imperfections and on-site frequency inhomogeneities of the individual QEs. Our results demonstrate that deep-subwavelength triangular trimers and, more broadly, highly compact ring geometries are excellent candidates for the deterministic preparation of collective radiative states via SUPER excitation. These predictions could be realized with solid-state emitters and molecules. Our findings offer a route toward the direct probing of the `pure' electromagnetic layer of interaction in biological and bio-inspired synthetic nanophotonic ring configurations, with possible relevance in photonics, quantum information processing, and metrology.
Related
- Collective excitation-mediated transport in nanoscale Josephson junctions that exhibit quantum confinement
- Global zero-excitation state preparation through subsystem cooling
- Collective early-time spontaneous decay of a cold atomic ensemble from the single to multiple excitation regime
- Leggett--Garg Tests of Collective Excitation--Inhibition Dynamics in Neuronal Circuits
- Excitation of Collective Modes in a Chiral Superfluid by Thermal Quench
BibTeX
@misc{nunner2026collectivestate,
title = {{Collective-State Preparation in a Subwavelength Triangular Trimer Using SUPER Excitation}},
author = {Thomas Nunner and Johannes Kerber and Helmut Ritsch and Arpita Pal},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2607.12665},
eprint = {2607.12665},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.12665},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Collective-State Preparation in a Subwavelength Triangular Trimer Using SUPER Excitation
AU - Thomas Nunner
AU - Johannes Kerber
AU - Helmut Ritsch
AU - Arpita Pal
PY - 2026
DA - 2026/09/24
PB - arXiv
DO - 10.48550/arxiv.2607.12665
UR - https://arxiv.org/abs/2607.12665
AB - The Swing-UP of quantum EmitteR population (SUPER) scheme has recently been proposed as a deterministic method for the preparation of collective radiative states in two strongly dipole-coupled quantum emitters (Phys. Rev. Res. \textbf{8}, 013179 (2026)). Here, we apply this approach to an equilateral subwavelength triangular trimer of dipole-coupled two-level quantum emitters (QEs), loosely inspired by biological light-harvesting ring geometries, and demonstrate that tailored, time-overlapping, red-detuned ultrashort SUPER pulses can selectively prepare collective states in a C_3-symmetric system, including energetically degenerate eigenstates that are resolved through site-dependent optical phases. We find that both the state selectivity and the preparation efficiency depend strongly on the inter-emitter spacing. In particular, at deep-subwavelength separations, the symmetric collective state can be deterministically prepared with near-unity efficiency (approximately 94%), whereas the inversion efficiency and state selectivity are significantly lower at larger inter-emitter separations. Furthermore, this state preparation technique inherits a certain degree of robustness against reasonable static position imperfections and on-site frequency inhomogeneities of the individual QEs. Our results demonstrate that deep-subwavelength triangular trimers and, more broadly, highly compact ring geometries are excellent candidates for the deterministic preparation of collective radiative states via SUPER excitation. These predictions could be realized with solid-state emitters and molecules. Our findings offer a route toward the direct probing of the `pure' electromagnetic layer of interaction in biological and bio-inspired synthetic nanophotonic ring configurations, with possible relevance in photonics, quantum information processing, and metrology.
ER -