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Ultrafast Excitation Exchange in a Maxwell Fish-Eye Lens.

Oliver Diekmann¹, Dmitry O Krimer¹, Stefan Rotter¹

¹Institute for Theoretical Physics, Vienna University of Technology (TU Wien), Vienna A-1040, Austria.

Physical Review Letters

|January 19, 2024

Summary

Researchers harnessed multimode strong coupling to coherently control quantum systems. A Maxwell fish-eye lens enabled pulsed photon exchange between distant quantum emitters and atomic ensembles.

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Area of Science:

Quantum Optics
Quantum Information Science
Cavity Quantum Electrodynamics

Background:

Strong coupling between quantum emitters and cavity modes is fundamental in quantum optics.
Interest is growing in strong coupling to multiple resonator modes (multimode strong coupling).

Purpose of the Study:

To investigate the use of multimode strong coupling for coherent quantum system control.
To demonstrate a method for pulsed excitation exchange between quantum emitters.

Main Methods:

Utilizing a Maxwell fish-eye lens to mediate interactions.
Implementing pulsed excitation exchange via single-photon pulses.
Extending the photon-exchange to atomic ensembles.

Main Results:

Demonstrated coherent control of quantum systems via multimode strong coupling.
Successfully implemented pulsed excitation exchange between two distant quantum emitters.
Showcased enhanced collective coupling strength for photon-exchange between atomic ensembles.

Conclusions:

Multimode strong coupling offers a powerful pathway for coherent quantum control.
The Maxwell fish-eye lens is a viable tool for mediating quantum emitter interactions.
Photon-exchange in atomic ensembles can be collectively enhanced through this approach.