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Transmission [Normalized) Demonstration of on chip cavity to thermal Rb vapor strong coupling

Alex Naiman, Yoel Sebbag, Uriel Levy

We experimentally demonstrate a chip scale platform supporting strong coupling between hot atomic rubidium vapor and a whispering gallery mode, with diverse applications in quantum photonics, sensing, nonlinear physics, chemistry and more.

Conference on Lasers and Electro-OpticsJan 1, 20201 citation

Strong coupling cavity physics in microspheres with whispering gallery modes

S. Dutta Gupta, G. S. Agarwal

Optics CommunicationsApr 1, 199533 citations

Strong coupling between a single artificial atom and an integrated silicon carbide microresonator

Daniil M. Lukin, Dominic Catanzaro, Melissa A. Guidry +7 more

The strong coupling regime between a photonic cavity and an artificial atom in 4H-Silicon Carbide-on-insulator photonics is demonstrated, using a high-finesse whispering gallery mode resonator and a single silicon vacancy center.

Jan 1, 20241 citation

Coupling Thermal Atomic Vapor to Slot Waveguides

Ralf Ritter, Nico Gruhler, Helge Dobbertin +5 more

New experiments investigate the interaction between light and rubidium atoms in a slot waveguide, which could pave the way for more efficient coupling between light and atoms in on-chip atomic vapor cell applications.

Physical Review XMay 4, 201850 citations

Collective strong coupling of thermal atoms to integrated microring resonators

Xiaoyu Cheng, Benyamin Shnirman, Alexandra Kopf +5 more

Strong coupling between atomic ensembles and high-quality optical cavities enables collective and nonlinear phenomena that are central to cavity quantum electrodynamics (cQED). Many experiments have been performed on this topic, with most of them focusing on cold atoms. Here, we experimentally demonstrate collective strong coupling between thermal rubidium vapor and high-quality silicon nitride microring resonators (MRRs) on an integrated photonic chip. We observe cavity-mode splitting, with a measured collective coupling strength of g N / 2 π ≈ 1 G Hz and a collective cooperativity of C N ≈ 2 at 110 ∘ C , indicating coherent energy exchange between the atomic ensemble and the cavity mode despite rapid decoherence in the thermal vapor system. We infer an average of 20 atoms effectively participating in the collective interaction, yielding a single-atom cooperativity of C 0 = 0.1 and approaching the single-atom strong-coupling regime. Our results establish the integrated thermal vapor MRR platform as a robust, compact, and scalable system for studying collective and nonlinear phenomena in cQED.Strong coupling between atomic ensembles and high-quality optical cavities enables collective and nonlinear phenomena that are central to cavity quantum electrodynamics (cQED). Many experiments have been performed on this topic, with most of them focusing on cold atoms. Here, we experimentally demonstrate collective strong coupling between thermal rubidium vapor and high-quality silicon nitride microring resonators (MRRs) on an integrated photonic chip. We observe cavity-mode splitting, with a measured collective coupling strength of g N / 2 π ≈ 1 G Hz and a collective cooperativity of C N ≈ 2 at 110 ∘ C , indicating coherent energy exchange between the atomic ensemble and the cavity mode despite rapid decoherence in the thermal vapor system. We infer an average of 20 atoms effectively participating in the collective interaction, yielding a single-atom cooperativity of C 0 = 0.1 and approaching the single-atom strong-coupling regime. Our results establish the integrated thermal vapor MRR platform as a robust, compact, and scalable system for studying collective and nonlinear phenomena in cQED.

arXiv:2604.24509Physical Review ResearchSep 19, 20260 citations

Light Vapor Interactions on a Chip

Uriel Levy, Meir Y. Grajower, Jonathan Bar-David +1 more

In this talk we discuss our recent results related to chip scale enhanced light-vapor interactions. We also discuss the potential of our platform for applications such as metrology, communications and photonic information technology.

Conference on Lasers and Electro-OpticsJan 1, 20170 citations

Demonstration of on Chip Cavity to Thermal Rb Vapor Strong Coupling

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Demonstration of on Chip Cavity to Thermal Rb Vapor Strong Coupling

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