2016
DOI: 10.1103/physrevb.94.195418
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Near-field relaxation of a quantum emitter to two-dimensional semiconductors: Surface dissipation and exciton polaritons

Abstract: The total spontaneous emission rate of a quantum emitter in the presence of an infinite MoS 2 monolayer is enhanced by several orders of magnitude, compared to its free-space value, due to the excitation of surface exciton polariton modes and lossy modes. The spectral and distance dependence of the spontaneous emission rate are analyzed and the lossy-surface-wave, surface exciton polariton mode and radiative contributions are identified. The transverse magnetic and transverse electric exciton polariton modes c… Show more

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Cited by 35 publications
(31 citation statements)
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“…It has been proposed that dielectric screening can cause the NRET efficiency to decrease as the number of layers of MoS2 increases [2,3]. Similar effects have been also been predicted for superlattices of monolayer MoS2, due modification of the mode distribution as the number of layers increases [4].…”
Section: Resultsmentioning
confidence: 54%
“…It has been proposed that dielectric screening can cause the NRET efficiency to decrease as the number of layers of MoS2 increases [2,3]. Similar effects have been also been predicted for superlattices of monolayer MoS2, due modification of the mode distribution as the number of layers increases [4].…”
Section: Resultsmentioning
confidence: 54%
“…It features a bandgap in the visible, strong excitonic resonances, and high oscillator strengths. MoS 2 also supports exciton-polaritons, and it has been predicted theoretically that it can modify the spontaneous decay rates for nearby quantum emitters [26][27][28][29]. Experiments with coupled quantum emitters (quantum dots and molecules) and MoS 2 layers have also appeared in the literature [30][31][32][33].…”
Section: Introductionmentioning
confidence: 91%
“…The Purcell factors at z = R were calculated from first-order perturbation theory, with the application of Fermi's golden rule, summing over all final states, and calculation of the relevant electromagnetic Green's tensor at the position of the QD, with Green's tensor representing the response of the geometry under consideration to a point-like excitation [34]. For details of the calculation, we refer the reader to [28]:…”
Section: Density Matrix Equations For the Qd Near A Mos 2 Monolayer Umentioning
confidence: 99%
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“…This can be intuitively understood based on the fact that a hyperbolic 2D system is metallic in one direction and insulating in the other. In the lossless limit, the metallic direction can support the strongly confined TM plasmon mode whereas the insulating direction supports only the weakly confined TE plasmon [51,52]. The large contrast between the respective mode volumes results in a strong anisotropy in the intravalley spontaneous emission rates in the two directions, leading to maximum valley coherence reaching close to the theoretical upper limit in the hyperbolic regions.…”
mentioning
confidence: 92%