A5029449662- Quantum Mechanics and Non-Hermitian Physics
- Nonlinear Photonic Systems
- Photonic and Optical Devices
- Mechanical and Optical Resonators
- Quantum Dots Synthesis And Properties
- Semiconductor Quantum Structures and Devices
- Plasmonic and Surface Plasmon Research
- Quantum Information and Cryptography
- Advanced Semiconductor Detectors and Materials
- Neural Networks and Reservoir Computing
- Metamaterials and Metasurfaces Applications
- Advanced Fiber Laser Technologies
- Advanced Antenna and Metasurface Technologies
- Quantum optics and atomic interactions
- Luminescence Properties of Advanced Materials
- Polydiacetylene-based materials and applications
- Gas Sensing Nanomaterials and Sensors
- Quantum many-body systems
- Quantum and electron transport phenomena
- Topological Materials and Phenomena
- Antimicrobial Peptides and Activities
- Antenna Design and Analysis
- Supramolecular Self-Assembly in Materials
- Semiconductor Lasers and Optical Devices
- Terahertz technology and applications
Yanbian University
2013-2024
Chungnam National University
2013
Abstract A device constructed from metamaterials is proposed, which makes asymmetric transmission and reflection achieved in addition to a perfect dual-band unidirectional reflectionlessness at THz frequencies for linearly polarized incident waves. Owing the unique structure characteristics, it exhibits an excellent performance of converting linear circular polarization multiple frequencies. Moreover, maximum PCR reaches 99.94%, ellipticity approaches 1 eight Additionally, UR AT are within...
Assisted by a quantum dot-microcavity coupled system, we propose an entanglement concentration scheme for concentrating two unknown partially entangled three-photon W states into maximally state based on spin selective photon reflection from the cavity and interference of polarized photons. In scheme, three parties, say Alice, Bob, Charlie in different distant locations can successfully share with high probability success local operations performed Alice classical communication. We calculate...
Dual-band unidirectional reflectionless propagation at two exceptional points is investigated in metamaterial, which composed of only gold resonators with circular holes, by simply manipulating the angle incident wave and distance between resonators. Furthermore, dual-band can be realized wide ranges from 0 ∘ to 50 255 nm 355 In addition, our scheme insensitive polarization due circular-hole structure
We theoretically investigate an controlled unidirectional reflectionlessness and near perfect absorption by applying external voltage in electro-optical plasmonic waveguide system based on near-field coupling between two resonators. The consists of resonators side coupled to a metal-dielectric-metal waveguide. Based the numerical simulation, when is U = 7.4 V, reflections for forward backward directions are close 0 0.82 at frequency 144.18 THz, while 0.81 150.86 THz 1.5 V. And high...
Dual-band unidirectional reflectionlessness is investigated in a system consisting of three stub resonators side-coupled to metal-insulator-metal plasmonic waveguide based on near-field coupling terahertz domain. Reflectivities [Formula: see text] and text], respectively, at two exceptional points 4.11[Formula: text]THz 4.695[Formula: are obtained for forward (backward) direction. More than that multi-band demonstrated multi-stub an MIM waveguide.
Abstract We propose a scheme to realize the active controlled dual-band unidirectional reflectionlessness at exceptional points by classical driving field in non-Hermitian quantum system that consists of two Λ-type three-level dots side coupled plasmonic waveguide. demonstrate can be appropriately tuning field, phase shift between dots, dissipations and dot-waveguide coupling strengths. Furthermore, spectra with quality factors ∼375.40 ∼402.59 obtained forward backward directions, respectively.
We propose a scheme to implement three-qubit controlled phase gate with one control qubit and two target qubits using quantum dots (QDs) in coupled photonic crystal (PC) cavities A B. In the scheme, three QDs are embedded transitions between levels only cavity modes without being driven by classical laser fields. investigate dynamics of system consisting resonant off-resonant couplings solve time-dependent Schrodinger equation analytically. The results show that can be directly implemented...
Wetting layer (WL) photoluminescence (PL) at 10 K dominated the PL spectra of low-density quantum dots (QDs) grown by migration-enhanced epitaxy (MEE), even very low excitation powers. Long rise time ground state (GS) QDs was observed, when carriers are generated in WL, indicating suppressed carrier capture from WL into QDs. Fluctuations thickness due to thinning MEE-grown produced strong localization effects. Temperature dependence intensity and GS agreed well with this interpretation.
Abstract We demonstrate the possibility of dual-band unidirectional reflectionlessness in a non-Hermitian quantum system composed plasmonic waveguide and two end-coupled cavities (PCs). Our scheme exhibits can be obtained at exceptional points by properly adjusting coupling strength between PCs, ratio decay rates cavity-waveguide strengths. As valuable feature, quality factor reaches to ∼175.4 forward direction, while backward is close ∼188.2.
Two organic molecules, 10,12-pentacodiynoic acid (PCDA) and para -xylenediamine ( p XDA), were complex in THF solution upon acid-base interactions assembled into thin films with a highly ordered structure after evaporation of the solvent. The binding specificities α -, β γ -cyclodextrins (CDs) photopolymerized polydiacetylenic studied. According to optical, morphological, structural analyses, it was found that preferentially interacted -CDs, as well host-guest interaction. In addition,...