Enhancing photon correlations through plasmonic strong coupling

Sáez‐Blázquez, Rocío; Feist, Johannes; Fernández‐Domínguez, Antonio I.; García‐Vidal, F. J.

doi:10.1364/optica.4.001363

Cited by 85 publications

(96 citation statements)

References 34 publications

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“…Using this fact, we assumed that systems of linear spasers are not suitable for the formation and control of nonclassical states of plasmons. At the same time, our result supplements the model in [23], in which strong NP-NP dipole-dipole interactions for the spaser-like system have been investigated with respect to the nonclassicality of photon states.…”

Section: Discussionsupporting

confidence: 79%

“…In the conditions of the current nonlinear problem (13) for the visualization of function (23), it is necessary to decouple correlators and decrease their degrees with the help of Wick's theorem. As a result, the complete selfconsistent system on correlators takes the form: …”

Section: Discussionmentioning

confidence: 99%

“…, (23) which corresponds to the cross-correlation function and is a criterion for establishing correlations between plasmonic modesĉ 1 andĉ 2 . In particular, the condition G (18) and (21) (dashed lines) and by using direct numerical simulation (solid and dotted lines) of the system (B1).…”

Section: Entangled Plasmon Generation In the Nonlinear Regime Ofmentioning

confidence: 99%

“…For example, the appearance of bunching (antibunching) effects for emitted photons can be observed in selfassembled QD structures [22] or in the mesoscopic chro- * avprokhorov33@mail.ru mophore ensemble strongly coupled with a plasmonic cavity [23]. In another approach, a pair of coupled QDs can be used as a powerful source of entangled photons due to the correlations between QD excitons in biexcitonic states [24].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Entangled plasmon generation in nonlinear spaser system under the action of external magnetic field

et al. 2018

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The present paper theoretically investigates features of quantum dynamics for localized plasmons in three-particle or four-particle spaser systems consisting of metal nanoparticles and semiconductor quantum dots. In the framework of the mean field approximation, the conditions for the observation of stable stationary regimes for single-particle plasmons in spaser systems are revealed, and realization of these regimes is discussed. The strong dipole-dipole interaction between adjacent nanoparticles for the four-particle spaser system is investigated. We show that this interaction can lead to the decreasing of the autocorrelation function values for plasmons. The generation of entangled plasmons in a three-particle spaser system with nonlinear plasmon-exciton interaction is predicted. For the first time the use of an external magnetic field is proposed for control of the cross-correlation between plasmons in the three-particle spaser system.

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Section: Discussionsupporting

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Section: Entangled Plasmon Generation In the Nonlinear Regime Ofmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Entangled plasmon generation in nonlinear spaser system under the action of external magnetic field

et al. 2018

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“…[5][6][7][8][9][10][11][12]) as well as plasmonic (Ref. [4,[13][14][15][16][17][18]20]) cavities and waveguides has been suggested. While several theoretical studies analyzed the interaction between quantum emitters and dielectric (Ref.…”

mentioning

confidence: 99%

Integrated nanoplasmonic quantum interfaces for room-temperature single-photon sources

2017

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We describe a general analytical framework of a nanoplasmonic cavity-emitter system interacting with a dielectric photonic waveguide. Taking into account emitter quenching and dephasing, our model directly reveals the single photon extraction efficiency, η, as well as the indistinguishability, I, of photons coupled into the waveguide mode. Rather than minimizing the cavity modal volume, our analysis predicts an optimum modal volume to maximize η that balances waveguide coupling and spontaneous emission rate enhancement. Surprisingly, our model predicts that near-unity indistinguishability is possible, but this requires a much smaller modal volume, implying a fundamental performance trade-off between high η and I at room temperature. Finally, we show that maximizing ηI requires that the system has to be driven in the weak coupling regime because quenching effects and decreased waveguide coupling drastically reduce η in the strong coupling regime. INTRODUCTIONAtomic and photonic quantum systems are central in many areas of quantum information processing, including quantum computing, communication, and precision sensing. [1][2][3] A central remaining challenge is to improve the naturally weak interaction between single photons and single emitters. [4] To this end, a plethora of approaches using dielectric (Ref. [5][6][7][8][9][10][11][12]) as well as plasmonic (Ref. [4,[13][14][15][16][17][18]20]) cavities and waveguides has been suggested. While several theoretical studies analyzed the interaction between quantum emitters and dielectric (Ref. [4,(21)(22)(23)(24)) or plasmonic (Ref. [13][14][15]) waveguides, it has been a remaining issue to develop a comprehensive physical model of a nanoplasmonic cavity interacting with a single quantum emitter and evanescently coupled to a dielectric waveguide. [25,26] In particular, there is a need for a comprehensive theoretical model to analyze the single photon extraction efficiency and indistinguishability of such integrated nanoplasmonic systems.In this paper we present for the first time a general theory framework of an integrated nanoplasmonic quantum interface which incorporates the impact of quenching and dephasing on the single photon extraction efficiency η and indistinguishability I. Our analysis yields optimal operating conditions to maximize η and I and gives clear physical intuition in the fundamental performance trade-offs. We reveal that η is maximized for an optimum cavity modal volume V opt η which is inversely proportional to the cavity Q−factor. On the other hand, I can only be maximized for much smaller V c V opt η at room temperature, imposing a fundamental limit on the ηI product. Finally, it is shown that the maximum ηI product is obtained for weak coupling because quenching effects and reduced waveguide coupling induce a huge decrease of η in the strong coupling regime. MODELThe quantum photonic platform under investigation is shown in Fig. 1. It consists of a dielectric nanophotonic waveguide that evanescently interacts with a cavityemitter system. Th...

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Strong Light–Matter Interactions Enabled by Polaritons in Atomically Thin Materials

Gonçalves

Stenger

Cox

et al. 2020

Advanced Optical Materials

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Polaritons, resulting from the hybridization of light with polarization charges formed at the boundaries between media with positive and negative dielectric response functions, can focus light into regions much smaller than its associated free‐space wavelength. This property is paramount for a plethora of applications in nanophotonics, ranging from biological sensing to photocatalysis to nonlinear and quantum optics. In the two‐dimensional (2D) limit, represented by atomically thin and van der Waals (vdW) materials of single‐layers bound by weak vdW attraction, polaritons are characterized by extremely small wavelengths associated with extreme optical confinement, and furthermore can exhibit long lifetimes, electrical tunability, and extreme sensitivity to their dielectric environment, among many other desirable qualities in nano‐optical device applications. Here, the fundamentals of polaritons in atomically thin materials are summarized, emphasizing plasmon and exciton polaritons, their strong light–matter interactions, and nonlinear plasmonics. More specifically, this review opens with a pedagogical discussion of plasmons in extended and nanostructured graphene, providing a classical electrodynamical model in a nonretarded theoretical framework, and the ultraconfined acoustic plasmons supported by hybrid graphene–dielectric–metal structures. In addition, the basic principles are introduced and the recent developments on nonlinear graphene plasmonics and on strong coupling physics with atomically thin transition metal dichalcogenides are reviewed. Finally, potentially new, promising research directions in the burgeoning field of 2D nanophotonics are identified.

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Enhancing photon correlations through plasmonic strong coupling

Cited by 85 publications

References 34 publications

Entangled plasmon generation in nonlinear spaser system under the action of external magnetic field

Entangled plasmon generation in nonlinear spaser system under the action of external magnetic field

Integrated nanoplasmonic quantum interfaces for room-temperature single-photon sources

Strong Light–Matter Interactions Enabled by Polaritons in Atomically Thin Materials

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