Coupling Emission from Single Localized Defects in Two-Dimensional Semiconductor to Surface Plasmon Polaritons

Cai, Tao; Dutta, Subhojit; Aghaeimeibodi, Shahriar; Yang, Zhigang; Nah, Sanghee; Fourkas, John T.; Waks, Edo

doi:10.1021/acs.nanolett.7b02222

Cited by 67 publications

(66 citation statements)

References 44 publications

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“…With this demonstration, a directional outcoupling of the quantum light is also necessary for collection. The routing of single photons was successfully demonstrated in plasmonic [102,103] as well as dielectric waveguide [104][105][106]. Statistical analysis of the position of different quantum emitters coupled to plasmonic waveguides showed that they are more likely to form close to the edges of the waveguides [103] with Purcell factor up to 15 ± 3, thus negating the need for pick and place.…”

Section: Integration With Photonic Structuresmentioning

confidence: 99%

Advances in quantum light emission from 2D materials

2019

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Two-dimensional (2D) materials are being actively researched due to their exotic electronic and optical properties, including a layer-dependent bandgap, a strong exciton binding energy, and a direct optical access to electron valley index in momentum space. Recently, it was discovered that 2D materials with bandgaps could host quantum emitters with exceptional brightness, spectral tunability, and, in some cases, also spin properties. This review considers the recent progress in the experimental and theoretical understanding of these localized defect-like emitters in a variety of 2D materials as well as the future advantages and challenges on the path toward practical applications.

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Section: Integration With Photonic Structuresmentioning

confidence: 99%

Advances in quantum light emission from 2D materials

2019

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“…An emission enhancement associated with a lifetime reduction was observed, yielding an impressive overall count rate from a single emitter of more than 5×10 6 counts/s at room temperature. The presented technique can be applied to a range of hybrid plasmonic-photonic systems for studying other 2D materials, such as transition metal di-chalcogenides [26][27] and exfoliated hBN monolayers. Further optimization in positioning and improvements in collection efficiency are expected to yield even higher count rates, which will be very attractive for practical devices.…”

Section: ∝ × ×mentioning

confidence: 99%

Nanoassembly of quantum emitters in hexagonal boron nitride and gold nanospheres

et al. 2018

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The assembly of quantum nanophotonic systems with plasmonic resonators is important for fundamental studies of single photon sources as well as for on-chip information processing. In this work, we demonstrate the controllable nanoassembly of gold nanospheres with ultra-bright narrow-band quantum emitters in 2D layered hexagonal boron nitride (hBN). We utilize an atomic force microscope (AFM) tip to precisely position gold nanospheres to close proximity to the quantum emitters and observe the resulting emission enhancement and fluorescence lifetime reduction. The extreme emitter photostability permits analysis at high excitation powers, and delineation of absorption and emission enhancement caused by the plasmonic resonators. A fluorescence enhancement of over 300% is achieved experimentally for quantum emitters in hBN, with a radiative quantum efficiency of up to 40% and a saturated count rate in excess of 5 × 10 counts per s. Our results are promising for the future employment of quantum emitters in hBN for integrated nanophotonic devices and plasmonic based nanosensors.

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“…In free space optical measurements, monolayer WSe 2 and other semiconducting TMDs are known to exhibit large light-matter interactions and large third-order nonlinear optical susceptibilities near their exciton resonance 13–19 . Recently, there has been significant interest in using monolayer TMDs for plasmonic applications including the demonstration of SPPs coupling to dark excitons in monolayer WSe 2 20,21 , increasing the nonlinear response using localized plasmonic effects 22–24 , and enhancement of single quantum emitter emission rates 25,26…”

Section: Introductionmentioning

confidence: 99%

2D semiconductor nonlinear plasmonic modulators

et al. 2019

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A plasmonic modulator is a device that controls the amplitude or phase of propagating plasmons. In a pure plasmonic modulator, the presence or absence of a plasmonic pump wave controls the amplitude of a plasmonic probe wave through a channel. This control has to be mediated by an interaction between disparate plasmonic waves, typically requiring the integration of a nonlinear material. In this work, we demonstrate a 2D semiconductor nonlinear plasmonic modulator based on a WSe 2 monolayer integrated on top of a lithographically defined metallic waveguide. We utilize the strong interaction between the surface plasmon polaritons (SPPs) and excitons in the WSe 2 to give a 73 % change in transmission through the device. We demonstrate control of the propagating SPPs using both optical and SPP pumps, realizing a 2D semiconductor nonlinear plasmonic modulator, with an ultrafast response time of 290 fs.

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Coupling Emission from Single Localized Defects in Two-Dimensional Semiconductor to Surface Plasmon Polaritons

Cited by 67 publications

References 44 publications

Advances in quantum light emission from 2D materials

Advances in quantum light emission from 2D materials

Nanoassembly of quantum emitters in hexagonal boron nitride and gold nanospheres

2D semiconductor nonlinear plasmonic modulators

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