Mapping complex mode volumes with cavity perturbation theory

Cognée, Kévin G.; Yan, Wei; China, Federico La; Balestri, Dario; Intonti, Francesca; Gurioli, Massimo; Koenderink, A. Femius; Lalanne, Philippe

doi:10.1364/optica.6.000269

Cited by 47 publications

(50 citation statements)

References 26 publications

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“…First, it addresses the important case of degeneracy of the underlying bare resonator modes, and second, it considers changes in the resonator properties induced by the polarizable objects. This aspect relates to the perturbation theory of resonators 20,33,34 . Both features are essential for the properties reported hereafter.…”

Section: Resultsmentioning

confidence: 99%

“…Considering the symmetry of our system and the fact that we expect two perturbed solutions close to the unperturbed cavity (complex) frequency , the frequency shift of the two QNMs with respect to can be effectively parametrized through 28,33 where i designates equivalently 1 or 2, is the radial component of the WGM QNM and ±cos( m Δ θ ) accounts for the coherent addition of the two perturbers, which depends on their relative position in the mode profile of the S and AS mode. The denominator accounts for near- and mid-field hybridization correction effects on polarizability that are mediated by the background Green function from antenna to antenna.…”

Section: Resultsmentioning

confidence: 99%

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Cooperative interactions between nano-antennas in a high-Q cavity for unidirectional light sources

et al. 2019

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We analyse the resonant mode structure and local density of states in high-Q hybrid plasmonic-photonic resonators composed of dielectric microdisks hybridized with pairs of plasmon antennas that are systematically swept in position through the cavity mode. On the one hand, this system is a classical realization of the cooperative resonant dipole–dipole interaction through a cavity mode, as is evident through predicted and measured resonance linewidths and shifts. At the same time, our work introduces the notion of ‘phased array’ antenna physics into plasmonic-photonic resonators. We predict that one may construct large local density of states (LDOS) enhancements exceeding those given by a single antenna, which are ‘chiral’ in the sense of correlating with the unidirectional injection of fluorescence into the cavity. We report an experiment probing the resonances of silicon nitride microdisks decorated with aluminium antenna dimers. Measurements directly confirm the predicted cooperative effects of the coupled dipole antennas as a function of the antenna spacing on the hybrid mode quality factors and resonance conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Cooperative interactions between nano-antennas in a high-Q cavity for unidirectional light sources

et al. 2019

Self Cite

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“…Furthermore, established theories for the determination of cavity mode volume do not always predict the behavior of non‐Hermitian, or lossy, plasmonic cavities . While theories for modeling plasmonic cavity mode volumes have been proposed, questions remain calling for more precise measurements to inform further theoretical developments.…”

Section: Introductionmentioning

confidence: 99%

Nano‐Cavity QED with Tunable Nano‐Tip Interaction

May

Fialkow

et al. 2020

Adv Quantum Tech

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Quantum state control of two‐level emitters is fundamental for many information processing, metrology, and sensing applications. However, quantum‐coherent photonic control of solid‐state emitters has traditionally been limited to cryogenic environments, which are not compatible with implementation in scalable, broadly distributed technologies. In contrast, plasmonic nano‐cavities with deep sub‐wavelength mode volumes have recently emerged as a path toward room temperature quantum control. However, optimization, control, and modeling of the cavity mode volume are still in their infancy. Here recent demonstrations of plasmonic tip‐enhanced strong coupling (TESC) with a configurable nano‐tip cavity are extended to perform a systematic experimental investigation of the cavity‐emitter interaction strength and its dependence on tip position, augmented by modeling based on both classical electrodynamics and a quasinormal mode framework. Based on this work, a perspective for nano‐cavity optics is provided as a promising tool for room temperature control of quantum coherent interactions that could spark new innovations in fields from quantum information and quantum sensing to quantum chemistry and molecular opto‐mechanics.

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“…Moreover, Koenderink and coworker theoretically predicted that the tip induced perturbation is proportional to the local strength of the intensity of the electric field [30]. This prediction has been recently debated in view of the non-Hermitian nature of photonics [31]; still, in the limit of a relative high Q (>1000, to be on the safe side), the previous prediction is quite accurate. Therefore, by reporting on a map the strength of the tip induced spectral shift as a function of the tip position, it is possible to map with a high fidelity the electric field intensity of the cavity modes (see Figure 2).…”

Section: Methodsmentioning

confidence: 99%

Coupled Photonic Crystal Nanocavities as a Tool to Tailor and Control Photon Emission

et al. 2019

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In this review, we report on the design, fabrication, and characterization of photonic crystal arrays, made of two and three coupled nanocavities. The properties of the cavity modes depend directly on the shape of the nanocavities and on their geometrical arrangement. A non-negligible role is also played by the possible disorder because of the fabrication processes. The experimental results on the spatial distribution of the cavity modes and their physical characteristics, like polarization and parity, are described and compared with the numerical simulations. Moreover, an innovative approach to deterministically couple the single emitters to the cavity modes is described. The possibility to image the mode spatial distribution, in single and coupled nanocavities, combined with the control of the emitter spatial position allows for a deterministic approach for the study of cavity quantum electrodynamics phenomena and for the development of new photonic-based applications.

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Mapping complex mode volumes with cavity perturbation theory

Cited by 47 publications

References 26 publications

Cooperative interactions between nano-antennas in a high-Q cavity for unidirectional light sources

Cooperative interactions between nano-antennas in a high-Q cavity for unidirectional light sources

Nano‐Cavity QED with Tunable Nano‐Tip Interaction

Coupled Photonic Crystal Nanocavities as a Tool to Tailor and Control Photon Emission

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