Search Results - "Froech, Johannes"
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Plastic Deformation of Single‐Crystal Diamond Nanopillars
Published in Advanced materials (Weinheim) (01-03-2020)“…Diamond is known to possess a range of extraordinary properties that include exceptional mechanical stability. In this work, it is demonstrated that nanoscale…”
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2
Coupling Spin Defects in Hexagonal Boron Nitride to Monolithic Bullseye Cavities
Published in Nano letters (11-08-2021)“…Color centers in hexagonal boron nitride (hBN) are becoming an increasingly important building block for quantum photonic applications. Herein, we demonstrate…”
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3
Three-Dimensional Nanothermistors for Thermal Probing
Published in ACS applied materials & interfaces (26-06-2019)“…Accessing the thermal properties of materials or even full devices is a highly relevant topic in research and development. Along with the ongoing trend toward…”
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4
A Single Chiral Nanoparticle Induced Valley Polarization Enhancement
Published in Small (Weinheim an der Bergstrasse, Germany) (01-09-2020)“…Valley polarization is among the most critical attributes of atomically thin materials. However, increasing contrast from monolayer transition metal…”
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5
Hexagonal Boron Nitride Cavity Optomechanics
Published in Nano letters (13-02-2019)“…Hexagonal boron nitride (hBN) is an emerging layered material that plays a key role in a variety of two-dimensional devices, and has potential applications in…”
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6
Spatially varying nanophotonic neural networks
Published in Science advances (08-11-2024)“…The explosive growth in computation and energy cost of artificial intelligence has spurred interest in alternative computing modalities to conventional…”
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7
Photonics with 2D materials: introduction to the special issue
Published in Optical materials express (01-08-2023)“…This is an introduction to the special issue on photonics with 2D materials…”
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8
Observation of Binary Spectral Jumps in Color Centers in Diamond
Published in Advanced optical materials (01-10-2020)“…Optical “blinking” normally refers to a switching behavior of fluorescence for quantum emissions between “ON” and “OFF” state. For quantum dots, single…”
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9
All-Dielectric Metasurface with a Locally Flat Photonic Band in All Directions
Published in 2024 Conference on Lasers and Electro-Optics (CLEO) (05-05-2024)“…Here we demonstrate a photonic band in a Lieb lattice metasurface that is locally flat in all directions around normal incidence up to a numerical aperture of…”
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Conference Proceeding -
10
Non-Volatile Reconfigurable Transmissive Notch Filter Using Wide Bandgap Phase Change Material Antimony Sulfide
Published in 2024 Conference on Lasers and Electro-Optics (CLEO) (05-05-2024)“…We experimentally demonstrate an electrically tunable notch filter. We observe a quality factor up to ~200 and demonstrate reversible tuning of a large volume…”
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Conference Proceeding -
11
Nonvolatile electrically controllable broadband switches based on phase-change material GST
Published in 2022 Conference on Lasers and Electro-Optics (CLEO) (01-05-2022)“…In this work, we report a nonvolatile electrically programmable broadband silicon photonic switch based on phase-change materials Ge 2 Sb 2 Te 5 with compact…”
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Conference Proceeding -
12
Nonlocal, Flat Band Meta-optics for Monolithic, High Efficiency, Compact Photodetectors
Published 08-12-2023“…Nano Letters 2024 Miniaturized photodetectors are becoming increasingly sought-after components for a range of next generation technologies, such as autonomous…”
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13
Quantitative Phase Imaging with a Metalens
Published 20-09-2023“…Quantitative phase imaging (QPI) recovers the exact wavefront of light from the intensity measured by a camera. Topographical maps of translucent microscopic…”
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14
Spatially Varying Nanophotonic Neural Networks
Published 07-08-2023“…The explosive growth of computation and energy cost of artificial intelligence has spurred strong interests in new computing modalities as potential…”
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15
Rewritable Photonic Integrated Circuits Using Dielectric-assisted Phase-change Material Waveguides
Published 21-04-2023“…Photonic integrated circuits (PICs) have the potential to drastically expand the capabilities of optical communications, sensing, and quantum information…”
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16
Partially coherent double phase holography in visible using meta-optics
Published 02-12-2022“…Ultrathin flat meta-optics have shown great promise for holography in recent years. However, most of the reported meta-optical holograms rely on only phase…”
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17
Real Time Full-Color Imaging in a Meta-Optical Fiber Endoscope
Published 01-11-2022“…Endoscopes are an important component for the development of minimally invasive surgeries. Their size is one of the most critical aspects, because smaller and…”
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18
Quantum interference of resonance fluorescence from Germanium-vacancy color centers in diamond
Published 16-02-2022“…Resonance fluorescence from a quantum emitter is an ideal source to extract indistinguishable photons. By using the cross polarization to suppress the laser…”
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19
Observation of Extraordinary SHG from WS2 Monolayers Boosted by Optical Bound States in the Continuum
Published in 2020 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) (01-08-2020)“…Integrating WS 2 monolayers with resonant silicon metasurfaces hosting optical bound states in the continuum, we observe a strong increase of the…”
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Conference Proceeding -
20
Optical switching of resonance fluorescence from a single germanium vacancy color center in diamond
Published 10-04-2019“…Phys. Rev. Lett. 123, 033602 (2019) Scalable quantum photonic networks require coherent excitation of quantum emitters. However, many solid-state systems can…”
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