Strong coupling of single quantum dots with low-refractive-index/high-refractive-index materials at room temperature

Xu, Xingsheng; Jin, Siyue

doi:10.1126/sciadv.abb3095

Cited by 26 publications

(18 citation statements)

References 39 publications

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“…Extraordinary optical constants inherent in materials such as colloidal QDs, perovskites, and TMDCs can sustain F-P (open) cavity mode which leads to strong light–matter coupling without any external cavity in subwavelength thicknesses of these media. For instance, depositing low concentration 0D QDs on a Si/SiO 2 substrate shows polariton emission, as confirmed from the PL splitting . These polariton states are formed from the BIC modes at the interface between Si and SiO 2 , supporting a low-refractive/high-refractive index.…”

Section: Far-field Spectroscopy In Open Cavity Systems From Bulk Semi...mentioning

confidence: 69%

“…For instance, depositing low concentration 0D QDs on a Si/SiO 2 substrate shows polariton emission, as confirmed from the PL splitting. 244 These polariton states are formed from the BIC modes at the interface between Si and SiO 2 , supporting a low-refractive/ high-refractive index. Coupling BIC modes in a photonic crystal cavity with TMDCs has been shown to enhance polariton nonlinearities.…”

Section: Far-field Spectroscopy In Open Cavity Systems From Bulk Semi...mentioning

confidence: 81%

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Exciton–Photonics: From Fundamental Science to Applications

Anantharaman

Jariwala

2021

ACS Nano

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Semiconductors in all dimensionalities ranging from 0D quantum dots and molecules to 3D bulk crystals support bound electron-hole pair quasiparticles termed as excitons. Over the past two decades, the emergence of a variety of low-dimensional semiconductors that support excitons combined with advances in nano-optics and photonics has burgeoned a new area of research that focuses on engineering, imaging, and modulating coupling between excitons and photons, resulting in the formation of hybrid-quasiparticles termed exciton-polaritons. This new area has the potential to bring about a paradigm shift in quantum optics, as well as classical optoelectronic devices. Here, we present a review on the coupling of light in excitonic semiconductors and investigation of the unique properties of these hybrid quasiparticles via both farfield and near-field imaging and spectroscopy techniques. Special emphasis is laid on recent advances with critical evaluation of the bottlenecks that plague various materials towards practical device implementations including quantum light sources.Our review highlights a growing need for excitonic materials development together with optical engineering and imaging techniques to harness the utility of excitons and their host materials for a variety of applications.

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Section: Far-field Spectroscopy In Open Cavity Systems From Bulk Semi...mentioning

confidence: 69%

Section: Far-field Spectroscopy In Open Cavity Systems From Bulk Semi...mentioning

confidence: 81%

Exciton–Photonics: From Fundamental Science to Applications

Anantharaman

Jariwala

2021

ACS Nano

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“…In addition, continuous-wave (CW) excitation realized strong coupling between the CQDs and planar cavities at RT 17 , which is indicative of a large transition dipole moment in CQDs. The strong coupling between the CQDs and photonic modes split the reflectivity spectrum 17 or the PL spectrum 18 , which is similar to self-induced transparency 19 .…”

mentioning

confidence: 89%

“…The F-P mode formed in the low-refractive-index film on a high-refractive-index substrate is a quasi-bound state in the continuum 18 . The schematic drawing of the material of SU8/Si is shown in Fig.…”

Section: Strong Coupling Of Cqds Under Continue-wave Excitationmentioning

confidence: 99%

“…Due to the high-refractive index of Si, the reflectivity R2 in the second pathway has an additional phase of π, and the total phase difference between R2 in the second pathway and R1 in the first pathway is 2 kπ + π. The phase difference between light transmitted from the air-SU8 interface and that reflected from the SU8-Si interface is 2 kπ + π, which leads to destructive interference 18 . Therefore, loss to the mode in the SU8 film is low, and the F-P mode in the lowrefractive-index/high-refractive-index configuration is a quasibound state in the continuum.…”

Section: Strong Coupling Of Cqds Under Continue-wave Excitationmentioning

confidence: 99%

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Study of ultrafast Rabi flopping in colloidal quantum dots at room temperature

Zhen

Jin

et al. 2021

Commun Phys

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The interaction between high-intensity ultrashort optical pulses and materials has led to a number of fascinating optical phenomena, including Rabi flopping and self-induced transparency. Until now, there have been few reports on ultrashort coherent pulse propagation and reshaping in semiconductor materials. Here we investigate Rabi flopping and Rabi splitting in colloidal quantum dots with Fabry-Perot cavity of SU8/Si. The Rabi flopping phenomenon is monitored via the pump-probe differential reflection spectroscopy. A high excitation power reshapes the temporal oscillations so that the fast Fourier transform spectra display several peaks. The photoluminescence spectrum by continuous-wave excitation splits under a proper incident angle, and the splitted photoluminescence spectrum is generally consistent with the amplitude of differential reflectivity as function of wavelength. These results demonstrate that both of the temporal oscillations and the splitting of the continuous-wave excited photoluminescence spectra are due to strong coupling between colloidal quantum dots and the Fabry-Perot cavity.

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Planar Optical Cavities Hybridized with Low‐Dimensional Light‐Emitting Materials

et al. 2022

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Figure 6. a) Schematic and optical image of a nanolaser that consists of Si PC and monolayer Molybdenum telluride. b) i) The illustration of the upconversion nanolaser that consists of UCNPs coated on the plasmonic lattice. ii) The diagram exhibits the energy transfer mechanism in UCNP. c) Perovskite-based lasing device. Left upper illustration is the near-field profile representing third-order Mie resonance. SEM image shows the CsPbBr 3cube with a size of 310 nm. In the emission spectrum, an extremely sharp peak that stands for lasing action is observed. Inset represents the interference pattern that appears in the optical image of the perovskite cube. d) Perovskite-based BIC lasing device. Schematic shows the vortex lasing system composed of hole patterned perovskite film and a blue laser for pumping. i) The dispersion relation is photonic bands of the perovskite hole pattern in the direction of ΓX and ΓM around 550 nm. ii) The donut-shaped far-field profile and self-interference pattern. The white arrows denote the fork shape which means the vortex beam nature. (a) Reproduced with permission. [198] Copyright 2017, Springer Nature. (b) Reproduced with permission. [156]

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Strong coupling of single quantum dots with low-refractive-index/high-refractive-index materials at room temperature

Cited by 26 publications

References 39 publications

Exciton–Photonics: From Fundamental Science to Applications

Exciton–Photonics: From Fundamental Science to Applications

Study of ultrafast Rabi flopping in colloidal quantum dots at room temperature

Planar Optical Cavities Hybridized with Low‐Dimensional Light‐Emitting Materials

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