Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Low Temperature Physics

Entanglement Generated in Quantum Dot-Cavity Coupled System Mediated by Plasmonic Waveguide

Ju-Song Ryom, Gang-Yong Ri, Nam-Chol Kim, Myong-Chol Ko, Il-Hyang Choe, Su-Ryon Ri

Published Jul 21, 2023• 4 citations
Publisher
DOI
10.1007/s10909-023-02982-2

Related papers

Entanglement of two quantum dots with dipole–dipole interaction coupled to a cavity in plasmonic waveguide system

Ju-Song Ryom, Gang-Yong Ri, Nam-Chol Kim +3 more

Quantum Information Processing•Jul 26, 2023•7 citations

Controllable Entanglement of a Pair of Quantum Dots Embedded in a Common Cavity by a T-Shaped Plasmonic Waveguide

Gang-Yong Ri, Ju-Song Ryom, Myong-Chol Ko +4 more

Plasmonics•Mar 15, 2025•1 citation

Multipolar and nonlocal effects in plasmon-mediated entanglement generation

Luke C. Ugwuoke, Tjaart P. J. Krüger, Mark S. Tame

The generation of quantum entanglement is important for a wide range of quantum technology protocols. In nanophotonics, a promising platform for quantum technologies, entanglement generation via plasmon-mediated coupling in quantum dot qubits is often modeled within the dipole limit, where only dipolar plasmons of the mediating nanoparticle are considered, and the local response approximation, where nonlocal corrections are ignored. However, multipolar effects manifest strongly at coupling distances less than the nanoparticle size, while nonlocal optical effects stem from a size-induced dielectric response. We investigated these two important effects in the generation of two-qubit entanglement mediated by plasmonic coupling. A cavity quantum electrodynamic approach is employed, where the induced plasmonic effects lead to modified transition rates in the dynamics of the coupled quantum dot qubits. We find that multipolar modes and size-dependent damping lead to entanglement decay at small coupling distances and limit mediated entanglement with certain particle sizes. We discuss potential implications of multipolar modes in entanglement-based quantum sensing.

quant-pharXiv:2511.09291•Quantum Information Processing•Nov 13, 2025•0 citations

Entanglement of Two Quantum Dots with Azimuthal Angle Difference in Plasmonic Waveguide System

Ju-Song Ryom, Nam-Chol Kim, Myong-Chol Ko +1 more

Plasmonics•Jan 14, 2022•9 citations

Single plasmon routing with the four quantum dots coupled to a cross-type plasmonic waveguide

Chol-Min Kim, Nam-Chol Kim, Myong-Chol Ko +2 more

Quantum Information Processing•May 27, 2023•2 citations

Generation of robust entanglement in plasmonically coupled quantum dots driven by quantum squeezed light

Sina Soleimanikahnoj, Stephen K. Gray, Norbert F. Scherer

Can quantum light reliably generate entanglement in systems with dissipation? Our cavity quantum electrodynamics calculations demonstrate that a single-mode squeezed light source can robustly generate steady-state entanglement between a plasmonically coupled pair of quantum dots. The strong coupling of plasmons to the light source and the pairwise nature of squeezed photon generation enable entanglement between quantum dots. This entanglement, measured as concurrence, can be improved by replacing an entangled photon-pair pulsed source of light with continuous pumping of squeezed photons. Unlike previously introduced schemes, the concurrence is robust against variations in the system parameters. Specifically, the generation of entanglement does not rely on fine-tuning of the plasmon-quantum dot coupling. These results provide a new perspective for robust entangled-state preparation in open quantum systems.

arXiv:2312.00608•The Journal of Chemical Physics•Jul 9, 2026•0 citations
The generation of quantum entanglement is important for a wide range of quantum technology protocols. In nanophotonics, a promising platform for quantum technologies, entanglement generation via plasmon-mediated coupling in quantum dot qubits is often modeled within the dipole limit, where only dipolar plasmons of the mediating nanoparticle are considered, and the local response approximation, where nonlocal corrections are ignored. However, multipolar effects manifest strongly at coupling distances less than the nanoparticle size, while nonlocal optical effects stem from a size-induced dielectric response. We investigated these two important effects in the generation of two-qubit entanglement mediated by plasmonic coupling. A cavity quantum electrodynamic approach is employed, where the induced plasmonic effects lead to modified transition rates in the dynamics of the coupled quantum dot qubits. We find that multipolar modes and size-dependent damping lead to entanglement decay at small coupling distances and limit mediated entanglement with certain particle sizes. We discuss potential implications of multipolar modes in entanglement-based quantum sensing.
Can quantum light reliably generate entanglement in systems with dissipation? Our cavity quantum electrodynamics calculations demonstrate that a single-mode squeezed light source can robustly generate steady-state entanglement between a plasmonically coupled pair of quantum dots. The strong coupling of plasmons to the light source and the pairwise nature of squeezed photon generation enable entanglement between quantum dots. This entanglement, measured as concurrence, can be improved by replacing an entangled photon-pair pulsed source of light with continuous pumping of squeezed photons. Unlike previously introduced schemes, the concurrence is robust against variations in the system parameters. Specifically, the generation of entanglement does not rely on fine-tuning of the plasmon-quantum dot coupling. These results provide a new perspective for robust entangled-state preparation in open quantum systems.