Super- and sub-radiance from two-dimensional resonant dipole-dipole interactions

Area of Science:

• Quantum Optics
• Atomic Physics
• Condensed Matter Theory

Background:

• Resonant dipole-dipole interactions (RDDI) govern light-matter interactions in atomic ensembles.
• Understanding collective radiation phenomena is crucial for quantum technologies.
• Confined systems offer unique interaction dynamics compared to free space.

Purpose of the Study:

• To theoretically investigate super- and sub-radiance arising from RDDI in a 2D reservoir.
• To analyze the distinct long-range behavior of 2D RDDI.
• To explore the dynamics and applications of subradiant states in engineered atomic arrays.

Main Methods:

• Theoretical modeling of resonant dipole-dipole interactions in a 2D confined system.
• Analysis of collective radiation properties of singly-excited symmetric states.
• Investigation of subradiant state dynamics via imprinted spatially dependent phases.

Main Results:

• 2D RDDI exhibits qualitatively and quantitatively different long-range behavior compared to free space RDDI.
• The singly-excited symmetric state shows subradiant decays over distances significantly larger than the transition wavelength.
• Long-range atom-atom correlations are observed in the subradiant states.
• Spatially phased atomic arrays allow access to and manipulation of subradiant states.

Conclusions:

• Confined 2D reservoirs provide rich opportunities for engineering light-matter interactions.
• The observed subradiant states hold promise for quantum light storage applications.
• Precise control over single-excitation states is achievable through engineered 2D systems.