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Abstract Deterministic positioning single site-controlled high symmetric InGaAs quantum dots (QDs) in (111)B-oriented GaAs photonic crystal cavities with nanometer-scale accuracy provides an idea component for building integrated quantum photonic circuits. However, it has been a long-standing challenge of improving cavityQ-factors in such systems. Here, by optimizing the trade-off between the cavity loss and QD spectral quality, we demonstrate our site-controlled QD-nanocavity system operating in the intermediate coupling regime mediated by phonon scattering, with the dynamic coexistence of strong and weak coupling. The cavity-exciton detuning-dependent micro-photoluminescence spectrum reveals concurrence of a trend of exciton-polariton mode avoided crossing, as a signature of Rabi doublet of the strongly coupled system. Meanwhile, a trend of keeping constant or slight blue shift of coupled exciton–cavity mode(CM) energy across zero-detuning is ascribed to the formation of collective states mediated by phonon-assisted coupling, and their rare partial out-of-synchronization linewidth-narrowing is linked to their coexisting strong-weak coupling regime. We further reveal the pump power-dependent anti-bunching photon statistical dynamics of this coexisting strong-weak coupled system and the optical features of strongly confined exciton-polaritons, and dark-exciton-like states. These observations demonstrate the potential capabilities of site-controlled QD-cavity systems as deterministic quantum nodes for on-chip quantum information processing and provide guidelines for future device optimization for achieving the strong coupling regime.
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This content will become publicly available on November 24, 2026
Synchronization of stochastic complex networks of reaction diffusion equations
Abstract We consider a complex network that consists of reaction-diffusion equations and is connected through both a deterministic and a stochastic coupling. If the intensity of the deterministic coupling is strong enough, we prove that all elements of the network will eventually exhibit the same behavior, resulting in synchronization. This synchronized state can be described by a related deterministic equation.
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- Award ID(s):
- 2147189
- PAR ID:
- 10651419
- Publisher / Repository:
- IOP
- Date Published:
- Journal Name:
- Nonlinearity
- Volume:
- 38
- Issue:
- 11
- ISSN:
- 0951-7715
- Page Range / eLocation ID:
- 115020
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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