Tag: Hexagonal boron nitride
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Bimolecular and extraordinarily large Auger recombination processes in hexagonal boronnitride
Ioannis ChatzakisTexas Tech University, Lubbock, Texas, USA _______________________________________ Hexagonal boron nitride (hBN) is a wide, indirect bandgap semiconductor with great promise for optoelectronic devices in the ultraviolet and mid-infrared spectral regimes. The dynamic behavior of photogenerated carriers dominates the efficiency of optoelectronic devices. Here, we report on the dynamics of photoexcited free carriers in exfoliated…
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Mode Conversion of Hyperbolic Phonon Polaritons in Engineered van der Waals Structures
Byung-II NohAuburn University, Auburn, Alabama, USA _______________________________________ Electromagnetic hyperbolicity, with access to sub-diffraction optics and high photonic density of states, has driven key functionalities in nanophotonics, including super-resolution imaging, efficient energy control, and extreme light manipulation. Central to these advances are hyperbolic polaritons—nanometer-scale light-matter waves—spanning multiple energy-momentum dispersion orders with increasing optical momenta. While high-order…
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Evolution of carbon color centers in pristine hexagonal boron nitride by electric field
Seungmin ParkKyung Hee University, Seoul, Republic of Korea _______________________________________ Hexagonal boron nitride (hBN) is a unique two-dimensional van der Waals material with a wide bandgap of 6.2 eV, optical transparency, and stability under ambient conditions and high temperatures. Due to its wide bandgap, color centers at various wavelengths can be created within hBN, which have…
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All-dry Pick-Up and Transfer Method for Quantum Emitters in hBN
Mohammad N. MishukTechnical University of Munich, Munich, Germany _______________________________________ Single photon emitters in hexagonal boron nitride, distinguished by their exceptional photophysical properties, have been the focus of extensive research due to their potential to significantly advance photonic quantum technologies. However, achieving scalable integration of these emitters to arbitrary platforms with high yield and retaining their…
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Electrostatically tunable hexagonal boron nitride single photon emitters integrated in silicon nitride waveguide for scalable quantum photonic devices.
Kristina L. MalinowskiCalifornia Institute of Technology, Pasadena, California, USA _______________________________________ Color centers in hexagonal boron nitride (hBN) are a promising platform for solid state single photon sources due to their brightness, purity and stability at room temperature. Further, tunability, homogenous broadening and indistinguishability have all been demonstrated for hBN color centers, representing important steps towards…
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Investigation of dynamic nuclear polarization with boron vacancy defects in hexagonal boron nitride
Kento SasakiThe University of Tokyo – Tokyo Japan_______________________________________ Boron vacancy defects (VB) in hexagonal boron nitride (hBN) are luminescent defects exhibit optically detected magnetic resonance (ODMR) at room temperature and are being researched for use in quantum technologies. The electron spins of VB interacting with the nuclear spins of nitrogen and boron allow their dynamic…
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Coherent control of single nuclear spins in hexagonal boron nitride
Tongcang LiPurdue University – West Lafayette, Indiana, USA_______________________________________ Optically active spin defects in hexagonal boron nitride (hBN), a two-dimensional van der Waals material, provide exciting opportunities for quantum information science and technology. Nuclear spins, with their significantly longer coherence times compared to electron spins, are also important quantum resources. In our earlier work, we demonstrated…
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Vertical tunneling device with carbon doped hexagonal boron nitride
YoungJae KimKyung Hee University – Seoul, Republic of Korea_______________________________________ Nowadays, the utilization of electronic devices is increasing, various of power electronic devices are being used from low-voltage AC-DC converters used for mobile phone chargers to high-voltage converters employed in power transmission. Silicon carbide (SiC) is widely recognized as a promising material for power electronics in…