Nonlocal quasinormal modes for arbitrarily shaped three-dimensional plasmonic resonators

Dezfouli, Mohsen Kamandar; Tserkezis, Christos; Mortensen, N. Asger; Hughes, Stephen

doi:10.1364/optica.4.001503

Cited by 46 publications

(17 citation statements)

References 62 publications

(97 reference statements)

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“…QNMs are orthogonal with respect to an unconjugated scalar product [23] which allows identification of QNMs with projectors again. Also, in the case of dispersive materials which are ubiquitously present in nano-optical resonators [3,24], there exist approaches for QNM expansion [14,21]. However, the orthogonality and normalization of the QNMs, especially in the case of dispersive media, are still under active research and discussed controversially in the literature [14,21,[25][26][27][28].…”

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confidence: 99%

Riesz-projection-based theory of light-matter interaction in dispersive nanoresonators

Zschiedrich¹,

Binkowski

Nikolay

et al. 2018

Phys. Rev. A

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We introduce a theory to analyze the behavior of light emitters in nanostructured environments rigorously. Based on spectral theory, the approach opens the possibility to quantify precisely how an emitter decays to resonant states of the structure and how it couples to a background, also in the presence of general dispersive media. Quantification on this level is essential for designing and analyzing topical nanophotonic setups, e.g., in quantum technology applications. We use a numerical implementation of the theory for computing modal and background decay rates of a single-photon emitter in a diamond nanoresonator.

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mentioning

confidence: 99%

Riesz-projection-based theory of light-matter interaction in dispersive nanoresonators

Zschiedrich¹,

Binkowski

Nikolay

et al. 2018

Phys. Rev. A

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“…We noted that the OSE could be manifested as Mollow triplet [ 41,42 ] but expect it not to occur in our current study. As Mollow triplet is characteristic of resonance fluorescence in the strong field achieved under resonant pumping, its two sidebands are essentially the two photon‐dressed states and result from Rabi splitting of the two bare transition states, which are responsible for the OSE.…”

Section: Resultsmentioning

confidence: 63%

Molecular Radiative Energy Shifts under Strong Oscillating Fields

Zheng

Kang

Paria

et al. 2020

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Coherent manipulation of light‐matter interactions is pivotal to the advancement of nanophotonics. Conventionally, the non‐resonant optical Stark effect is harnessed for band engineering by intense laser pumping. However, this method is hindered by the transient Stark shifts and the high‐energy laser pumping which, by itself, is precluded as a nanoscale optical source due to light diffraction. As an analog of photons in a laser, surface plasmons are uniquely positioned to coherently interact with matter through near‐field coupling, thereby, providing a potential source of electric fields. Herein, the first demonstration of plasmonic Stark effect is reported and attributed to a newly uncovered energy‐bending mechanism. As a complementary approach to the optical Stark effect, it is envisioned that the plasmonic Stark effect will advance fundamental understanding of coherent light‐matter interactions and will also provide new opportunities for advanced optoelectronic tools, such as ultrafast all‐optical switches and biological nanoprobes at lower light power levels.

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“…This gives the probability that the cavity emitted photon will be radiatively emitted out of the antenna system. Note γ P nrad can also be computed from the QNM mode 31,48,49 , or directly in any Maxwell solver by integrating the power flow (if in the regime of a single QNM response). The non-radiative beta factor is defined similarly:…”

Section: Introductionmentioning

confidence: 99%

“…It is sometimes common to assume that the plasmon mode emission is through γ rad , and the "other" channels are through non-radiative loss, but there is usually no need to add any extra modes at all in QNM theory (unless the dipole is very near the metal walls, where evanescent modes play a more significant role). Indeed, a single QNM can be rigorously valid even for few nm gap antennas 49 , and nonradiative coupling is part of the mode eigenvalue solution. Thus, the QNM is intimately related to both radiative and non-radiative decay, and the total single QNM spontaneous emission rate depends on the dipole strength, d.…”

Section: Introductionmentioning

confidence: 99%

Theory and Limits of On-Demand Single-Photon Sources Using Plasmonic Resonators: A Quantized Quasinormal Mode Approach

et al. 2019

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Quantum emitters coupled to plasmonic resonators are known to allow enhanced broadband Purcell factors, and such systems have been recently suggested as possible candidates for on-demand single photon sources, with fast operation speeds. However, a true single photon source has strict requirements of high efficiency (brightness) and quantum indistinguishability of the emitted photons, which can be quantified through two-photon interference experiments. To help address this problem, we employ and extend a recently developed quantized quasinormal mode approach, which rigorously quantizes arbitrarily lossy open system modes, to compute the key parameters that accurately quantify the figures of merit for plasmon-based single photon sources. We also present a quantized input-output theory to quantify the radiative and nonradiative quantum efficiencies. We exemplify the theory using a nanoplasmonic dimer resonator made up of two gold nanorods, which yields large Purcell factors and good radiative output beta factors. Considering an optically pulsed excitation scheme, we explore the key roles of pulse duration and pure dephasing on the single photon properties, and show that ultrashort pulses (sub-ps) are generally required for such structures, even for low temperature operation. We also quantify the role of the nonradiative beta factor both for single photon and two-photon emission processes. Our general approach can be applied to a wide variety of plasmon systems, including metal-dielectrics, and cavity-waveguide systems, without recourse to phenomenological quantization schemes.

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Nonlocal quasinormal modes for arbitrarily shaped three-dimensional plasmonic resonators

Cited by 46 publications

References 62 publications

Riesz-projection-based theory of light-matter interaction in dispersive nanoresonators

Riesz-projection-based theory of light-matter interaction in dispersive nanoresonators

Molecular Radiative Energy Shifts under Strong Oscillating Fields

Theory and Limits of On-Demand Single-Photon Sources Using Plasmonic Resonators: A Quantized Quasinormal Mode Approach

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