A5023019130- Quantum Information and Cryptography
- Anaerobic Digestion and Biogas Production
- Neural Networks and Reservoir Computing
- Cryptography and Data Security
- Quantum Computing Algorithms and Architecture
- Quantum and electron transport phenomena
- Phosphorus and nutrient management
- Mechanical and Optical Resonators
- Advanced Sensor and Energy Harvesting Materials
- Biofuel production and bioconversion
- Access Control and Trust
- Photonic and Optical Devices
- Quantum optics and atomic interactions
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced MEMS and NEMS Technologies
- Network Security and Intrusion Detection
- Wastewater Treatment and Nitrogen Removal
- Cloud Data Security Solutions
- Internet Traffic Analysis and Secure E-voting
- Quantum many-body systems
- Advanced Malware Detection Techniques
- Tactile and Sensory Interactions
- Superconductivity in MgB2 and Alloys
- Thermal Radiation and Cooling Technologies
- Interactive and Immersive Displays
California Institute of Technology
2018-2023
University of Hong Kong
2022-2023
Pohang University of Science and Technology
2020
Chungnam National University
2014-2020
Kavli Energy NanoScience Institute
2018-2019
Seoul National University
2015
RIKEN
2015
Pusan National University
2015
Government of the Republic of Korea
2015
Colorado State University
2004-2006
Synthesis of many-body quantum systems in the laboratory can help provide further insight into emergent behavior materials, whose properties may improved methods for energy conversion, signal transport, or information processing. While majority engineerable systems, simulators, consist particles on a lattice with local interactions, featuring long-range interactions are particularly challenging to model and interesting study due rapid spatio-temporal growth entanglement correlations. Here,...
Bioinspired piezoelectric nanogenerators based on phage nanopillars are inceptively demonstrated, and the electrical power from holds promise for development of implantable wearable electronics.
Embedding tunable quantum emitters in a photonic bandgap structure enables control of dissipative and dispersive interactions between their bath. Operation the transmission band, outside gap, allows for studying waveguide electrodynamics slow-light regime. Alternatively, tuning emitter into results finite-range emitter-emitter via bound states. Here, we couple transmon qubit to superconducting metamaterial with deep sub-wavelength lattice constant (λ/60). The is formed by periodically...
While designing the energy-momentum relation of photons is key to many linear, nonlinear, and quantum optical phenomena, a new set light-matter properties may be realized by employing topology photonic bath itself. In this work we experimentally investigate superconducting qubits coupled metamaterial waveguide based on analog Su-Schrieffer-Heeger model. We explore topologically induced such waveguide, ranging from formation directional qubit-photon bound states topology-dependent cooperative...
A superconducting quantum circuit coupled to a tailored waveguide reservoir provides platform for exploring non-Markovian quantum-optical dynamics, in which the maintains memory of past events.
Moisture content influences physiological characteristics of microbes and physical structure solid matrices during composting animal manure. If moisture is maintained at a proper level, aerobic microorganisms show more active oxygen consumption due to increased microbial activity. In this study, optimum levels for two bedding materials (sawdust, rice hull) different mixtures beef manure (BS, Beef cattle manure+sawdust; BR, manure+rice were determined based on uptake rate measured by pressure...
We propose a superconducting electrical circuit that simulates quadratic optomechanical system. A capacitor placed between two transmission-line (TL) resonators acts like semi-transparent membrane, and quantum interference device (SQUID) terminates TL resonator behaves movable mirror. Combining these elements, it is possible to simulate coupling whose strength determined by the capacitance tunable bias flux through SQUIDs. Estimates using realistic parameters suggest an improvement in could...
The effect of thermal pretreatment conditions on hydrolysis characteristics dairy manure and sawdust mixtures has been evaluated. Thermal temperature varied between 35 <TEX>$120^{\circ}C$</TEX> the period treatment changed 30 1440min (24h). As duration increased, organic material solublization rates were improved. Maximum solubilizations chemical oxygen demand (SCOD), carbohydrates, volatile fatty acids(VFAs) observed when treated for one day at <TEX>$120^{\circ}C$</TEX>. Although showed...
Blocking the near-infrared region (NIR) is indispensable for saving energy consumed to maintain interior temperature in buildings. However, simultaneously enhancing transmission visible light and blocking NIR remains challenging. Here, we theoretically demonstrate a transparent all-dielectric metasurface selectively by using TiO2 nanocylinders an indium tin oxide (ITO) layer. The ITO layer implemented as back reflector because light, whereas becomes reflective material long-wavelength (λ >...
A structured electromagnetic reservoir can result in novel dynamics of quantum emitters. In particular, the be tailored to have a memory past interactions with emitters, contrast memory-less Markovian typical open systems. this Article, we investigate non-Markovian superconducting qubit strongly coupled slow-light waveguide reservoir. Tuning into spectral vicinity passband waveguide, find non-exponential energy relaxation as well substantial changes emission rate. Further, upon addition...
Recent advances in quantum information processing with superconducting qubits have fueled a growing demand for scaling and miniaturizing circuit layouts. Despite significant progress, accurately predicting the Hamiltonian of complex circuits remains challenging task. In this work, we propose an improved method quantizing that incorporates material- geometry-dependent kinetic inductance. Our approach models thin films as equivalent reactive boundary elements, seamlessly integrating into...
Rapid and accurate initialization of qubits, reset, is a crucial building block for various tasks in quantum information processing, such as error-correction estimation statistics noisy devices with many qubits. We demonstrate unconditional reset frequency-tunable transmon qubit that simultaneously resets multiple excited states by utilizing metamaterial waveguide engineered to provide cold bath over wide spectral range, while providing strong protection against Purcell decay the qubit....
Synthesis of many-body quantum systems in the laboratory can help provide further insight into emergent behavior materials, whose properties may improved methods for energy conversion, signal transport, or information processing. While majority engineerable systems, simulators, consist particles on a lattice with local interactions, featuring long-range interactions are particularly challenging to model and interesting study due rapid spatio-temporal growth entanglement correlations. Here,...
A pilot scale solid-state anaerobic co-digestion study was conducted to elucidate the feasibility of digestion as an effective treatment method for dairy manure (DM) and milking parlor wastewater (MPW), it focusing mainly on stability process methane production potential. Dairy were co-digested (1/0.48, w/w) in 11m3 volume reactor 63days at mesophilic condition (36°C). In addition, pH, volatile fatty acids ammonia periodically analyzed monitor inhibitions. The results showed that DM MPW...
The influence of mixing on biogas production and organic material removal performance solid state anaerobic digestion dairy manure sawdust bedding mixtures was evaluated using 22 L volume lab-scale digesters. After 45 days at <TEX>$37^{\circ}C$</TEX>, cumulative methane yield unmixed test unit (<TEX>$73.1N{\cdot}mL/g-VS$</TEX>) almost 1.3 times that mixed one (<TEX>$56.3N{\cdot}mL/g-VS$</TEX>). biodegradable volatile solids rate 67%, which 28% greater than one. Our results reveal condition...
The DNS Security Extensions (DNSSEC) were developed to add origin authentication and integrity. DNSSEC defined a public key infrastructure over tree hierarchy for the validation. In DNSSEC, parent zone authenticates keys of its child zones. is broken when does not support DNSSEC. This paper proposes an effective mechanism overcome this partial deployment problem. Our solution uses bulletin board zones post their DNSKEY information. Resolvers use posted information find chains that can be...