Controlling multiple-dipole interactions mediated by nanophotonic structures and their application in W state...

Area of Science:

• Quantum optics
• Nanophotonics
• Quantum information science

Background:

• Cooperative quantum phenomena are crucial for quantum technologies.
• Controlling interactions between multiple quantum emitters is challenging.
• Nanophotonic structures offer pathways to engineer quantum interactions.

Purpose of the Study:

• To investigate cooperative behavior in systems of three and four quantum emitters.
• To theoretically demonstrate strong dipole-dipole interactions in designed nanophotonic systems.
• To explore the efficient generation of high-purity W states for quantum entanglement.

Main Methods:

• Theoretical modeling of quantum emitters coupled to nanophotonic structures.
• Analysis of dipole-dipole interactions at sub-wavelength scales.
• Simulation of W state generation in epsilon-near-zero waveguides, SOI microring resonators, and silicon microshell/silica core structures.

Main Results:

• Strong dipole-dipole interactions are achievable at emitter distances near the operating wavelength.
• Efficient generation of high-purity W states is demonstrated in the investigated systems.
• The proposed nanophotonic systems facilitate robust cooperative effects.

Conclusions:

• Designed nanophotonic structures enable strong coupling between quantum emitters.
• These systems are promising for generating multi-qubit W states.
• The findings pave the way for scalable, long-range quantum entanglement.