Cooperative Effects in Closely Packed Quantum Emitters with Collective Dephasing

Area of Science:

• Quantum Optics
• Solid-State Physics
• Quantum Information Science

Background:

• Cooperative effects in quantum emitters are usually hindered by dephasing from dipole-dipole interactions.
• Understanding and controlling these interactions is crucial for quantum technologies.

Purpose of the Study:

• To investigate the role of collective dephasing in quantum emitter ensembles.
• To demonstrate the restoration and enhancement of cooperative effects via controlled dephasing.

Main Methods:

• Theoretical analysis of a closely packed ensemble of strongly driven two-level quantum emitters.
• Modeling collective dephasing and its impact on dipole-dipole interactions.
• Comparing the dipole force in dephasing ensembles versus independent ensembles.

Main Results:

• Collective dephasing can counteract the suppression of cooperative effects.
• The dipole force on a collectively dephasing ensemble is enhanced compared to noninteracting emitters.
• This enhancement offers a new pathway to control collective quantum phenomena.

Conclusions:

• Controlled collective dephasing provides a mechanism to restore and enhance cooperative effects in quantum emitter ensembles.
• The findings have implications for designing and optimizing solid-state quantum systems.
• This work opens avenues for novel applications in quantum computing and sensing.