Plasmonics enabled atomically thin linearly polarized emitter at room temperature

• URL: http://arxiv.org/abs/2205.12935v1
• Date: Wed, 25 May 2022 17:38:58 GMT
• Title: Plasmonics enabled atomically thin linearly polarized emitter at room temperature
• Authors: Bidisha Roy, Maex Blauth, Siddharth Dhomkar, Michael Kaniber, Vinod M. Menon and Jonathan. J. Finley
• Abstract summary: tuning of excitonic emission from monolayer WSe2 mechanically exfoliated on top of a periodic two dimensional plasmonic array of elliptical gold (Au) nanodiscs. The results demonstrate active tunability of optical emission from WSe2 by using an otherwise passive plasmonic environment and open the possibility of achieving atomically thin linearly polarized emitters at room temperature.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Two-dimensional transition metal di-chalcogenide semiconductors provide unique possibilities to investigate strongly confined excitonic physics and a plasmonic platform integrable to such materials constitutes a hybrid system that can be of interest to enable manipulation of their cumulative optical properties. Here we report tuning of excitonic emission from monolayer WSe2, mechanically exfoliated on top of a periodic two dimensional plasmonic array of elliptical gold (Au) nanodiscs. By exploiting the polarization-dependent nature of plasmonic resonance of the nano plasmonic array (NPA), the photoluminescence (PL) emission from the overlaid monolayer WSe2 could be significantly manipulated. PL is preferentially enhanced at the NPA covered regions of the ake when excited closer to the plasmonic resonant frequencies and previously unpolarized WSe2 PL emission gained ~ 20 up to 40 % degree of linear polarization at room temperature. Obtaining significant spectral overlap between the PL spectrum of WSe2 and the polarization tunable plasmonic resonance of the NPA plays a crucial role in this observation. The results demonstrate active tunability of optical emission from WSe2 by using an otherwise passive plasmonic environment and open the possibility of achieving atomically thin linearly polarized emitters at room temperature. In addition to fundamentally interesting physics of such interactions this can be highly desirable for ultrathin orientation sensitive opto-electronic device related applications.

Related papers

• Quantum Pair Generation in Nonlinear Metasurfaces with Mixed and Pure Photon Polarizations [0.09423257767158633]
  We present a solution by achieving polarization engineering of frequency-nondegenerate biphotons emitted via spontaneous parametric down-conversion. By performing a comprehensive polarization tomography, we demonstrate that the polarization of the emitted photons directly reflects the qBIC mode's far-field properties.
  arXiv  Detail & Related papers  (2024-09-06T19:17:11Z)
• Single photon emitters in monolayer semiconductors coupled to transition metal dichalcogenide nanoantennas on silica and gold substrates [49.87501877273686]
  Transition metal dichalcogenide (TMD) single photon emitters offer numerous advantages to quantum information applications. Traditional materials used for the fabrication of nanoresonators, such as silicon or gallium phosphide (GaP), often require a high refractive index substrate. Here, we use nanoantennas (NAs) fabricated from multilayer TMDs, which allow complete flexibility with the choice of substrate.
  arXiv  Detail & Related papers  (2024-08-02T07:44:29Z)
• Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
  Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature. We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs. Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
  arXiv  Detail & Related papers  (2024-05-03T23:02:30Z)
• Dark excitons and hot electrons modulate exciton-photon strong coupling in metal-organic optical microcavities [0.0]
  Polaritons are formed as a result of strong hybridization of matter with light. Their understanding is of paramount importance, but their disentanglement in optical spectroscopy, thus far remained unattainable. We show that dark excitons affect the strength of exciton-photon coupling and manifest themselves as Fano-like polaritonic gain-loss spectra.
  arXiv  Detail & Related papers  (2024-01-26T13:02:09Z)
• Directional spontaneous emission in photonic crystal slabs [49.1574468325115]
  Spontaneous emission is a fundamental out-of-equilibrium process in which an excited quantum emitter relaxes to the ground state due to quantum fluctuations. One way to modify these photon-mediated interactions is to alter the dipole radiation patterns of the emitter, e.g., by placing photonic crystals near them. Our study delves into the interaction between these directional emission patterns and the aforementioned variables, revealing the untapped potential to fine-tune collective quantum optical phenomena.
  arXiv  Detail & Related papers  (2023-12-04T15:35:41Z)
• Transition metal ion ensembles in crystals as solid-state coherent spin-photon interfaces: The case of nickel in magnesium oxide [0.0]
  We present general guidelines for finding solid-state systems that could serve as coherent electron spin-photon interfaces. We show that transition metal ions in various crystals could comply with these guidelines.
  arXiv  Detail & Related papers  (2022-12-30T17:10:04Z)
• Near-monochromatic tuneable cryogenic niobium electron field emitter [48.7576911714538]
  We describe electron field emission from a monocrystalline, superconducting niobium nanotip at a temperature of 5.9 K. The emitted electron energy spectrum reveals an ultra-narrow distribution down to 16 meV. This source will decrease the impact of lens aberration and enable new modes in low-energy electron microscopy, electron energy loss spectroscopy, and high-resolution vibrational spectroscopy.
  arXiv  Detail & Related papers  (2022-05-11T20:46:21Z)
• Single quantum emitters with spin ground states based on Cl bound excitons in ZnSe [55.41644538483948]
  We show a new type of single photon emitter with potential electron spin qubit based on Cl impurities inSe. Results suggest single Cl impurities are suitable as single photon source with potential photonic interface.
  arXiv  Detail & Related papers  (2022-03-11T04:29:21Z)
• Efficient anisotropic polariton lasing using molecular conformation and orientation in organic microcavities [0.0]
  We report a two-fold reduction in the threshold of a polariton laser based on a high-Q microcavity filled with an active layer of poly(9,9-dioctylfluorene) (PFO) To our knowledge, this threshold is lower than demonstrated with state-of-the art optically pumped organic vertical cavity surface-emitting photon and polariton lasers.
  arXiv  Detail & Related papers  (2022-02-21T18:29:25Z)
• Hot-Band Absorption Can Mimic Entangled Two-Photon Absorption [52.77024349608834]
  We investigated the fluorescence signals from Rhodamine 6G and LDS798 excited with a CW laser or an entangled photon pair source at 1060 nm. We observed a signal that originates from hot-band absorption (HBA), which is one-photon absorption from thermally-populated vibrational levels of the ground electronic state. For the typical conditions under which E2PEF measurements are performed, contributions from the HBA process could lead to a several orders-of-magnitude overestimate of the quantum advantage for excitation efficiency.
  arXiv  Detail & Related papers  (2021-11-10T21:17:47Z)
• Hybrid plasmonic nano-emitters with controlled single quantum emitter positioning on the local excitation field [3.1381213840408786]
  Hybrid plasmonic nanoemitters based on the combination of quantum dot emitters (QD) and plasmonic nanoantennas open up new perspectives in the control of light. We report on the optimal overlap of antenna's near-field and active medium whose spatial distribution is controlled via a plasmon-triggered 2-photon polymerization.
  arXiv  Detail & Related papers  (2020-07-15T05:25:14Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.