A5042093546- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum Information and Cryptography
- Photonic and Optical Devices
- Orbital Angular Momentum in Optics
- Strong Light-Matter Interactions
- Advanced biosensing and bioanalysis techniques
- Molecular Junctions and Nanostructures
- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Advanced Electron Microscopy Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Cold Atom Physics and Bose-Einstein Condensates
- Mechanical and Thermal Properties Analysis
- Nonlinear Optical Materials Studies
- 2D Materials and Applications
- Quantum and electron transport phenomena
- Mechanical and Optical Resonators
- Dynamics and Control of Mechanical Systems
- RNA Interference and Gene Delivery
- Quantum, superfluid, helium dynamics
- Semiconductor Quantum Structures and Devices
- Photoacoustic and Ultrasonic Imaging
- Neural Networks and Reservoir Computing
- Near-Field Optical Microscopy
The Kidney Foundation of Thailand
2020-2024
Thailand Center of Excellence in Physics
2020-2024
Imperial College London
2016-2022
Trinity College Dublin
2021
Institute of High Performance Computing
2021
Agency for Science, Technology and Research
2021
Kiel University
2015
An emitter in the vicinity of a metal nanostructure is quenched by its decay through nonradiative channels, leading to belief zone inactivity for emitters placed within <10 nm plasmonic nanostructure. Here we demonstrate and explain why tightly coupled resonators forming nanocavities "quenching quenched" due plasmon mixing. Unlike isolated nanoparticles, such show mode hybridization, which can massively enhance excitation via radiative here experimentally confirmed laterally dependent...
Fabricating nanocavities in which optically active single quantum emitters are precisely positioned is crucial for building nanophotonic devices. Here we show that self-assembly based on robust DNA-origami constructs can position molecules laterally within sub-5 nm gaps between plasmonic substrates support intense optical confinement. By placing single-molecules at the center of a nanocavity, modification plasmon cavity resonance before and after bleaching chromophore obtain enhancements ≥4...
In the past decade, advances in nanotechnology have led to development of plasmonic nanocavities that facilitate light–matter strong coupling ambient conditions. The most robust example is nanoparticle-on-mirror (NPoM) structure whose geometry controlled with subnanometer precision. excited plasmons such are extremely sensitive exact morphology nanocavity, giving rise unexpected optical behaviors. So far, theoretical and experimental studies on been based solely their scattering absorption...
Plasmon-polaritons are among the most promising candidates for next generation optical sensors due to their ability support extremely confined electromagnetic fields and empower strong coupling of light matter. Here we propose quantum plasmonic immunoassay sensing as an innovative scheme, which embeds with recently demonstrated room temperature in nanoplasmonic cavities. In our protocol, antibody-antigen-antibody complex is chemically linked a emitter label. Placing quantum-emitter enhanced...
Plasmonic nanostructures can focus light far below the diffraction limit, and nearly thousandfold field enhancements obtained routinely enable few- single-molecule detection. However, for processes happening on molecular scale to be tracked with any relevant time resolution, emission strengths need well beyond what current plasmonic devices provide. Here, we develop hybrid incorporating both refractive optics, by creating SiO 2 nanospheres fused nanojunctions. Drastic improvements in Raman...
Strong light–matter interaction is at the heart of modern quantum technological applications and basis for a wide range rich optical phenomena. Coupling single emitter strongly with electromagnetic fields provides an unprecedented control over its states enables high-fidelity operations. However, single-emitter strong coupling exceptionally fragile has been realized mostly cryogenic temperatures. Recent experiments have, however, demonstrated that can be room temperature by using plasmonic...
Plasmonics now delivers sensors capable of detecting single molecules. The emission enhancements and nanometer-scale optical confinement achieved by these metallic nanostructures vastly increase spectroscopic sensitivity, enabling real-time tracking. However, the interaction light with such typically loses all information about spatial location molecules within a plasmonic hot spot. Here, we show that ultrathin nanogaps support complete mode sets which strongly influence far-field patterns...
Abstract Plasmonic nanocavities form very robust sub-nanometer gaps between nanometallic structures and confine light within deep subwavelength volumes to enable unprecedented control of light–matter interactions. However, spherical nanoparticles acquire various polyhedral shapes during their synthesis, which has a significant impact in controlling many interactions, such as photocatalytic reactions. Here, we focus on nanoparticle-on-mirror built from three (cuboctahedron,...
Semiconductor-metal hybrid nanostructures present an exotic class of nonlinear optical materials due to their potential optoelectronic applications. However, most studies date focus on total responses instead contributions from individual orders. In this Letter, we a theoretical study the third-order absorption colloidal semiconductor quantum dot (SQD)–metal nanoparticle (MNP) system. We develop novel analytic treatment based density matrix equation and derive closed-form expression for...
Abstract Plexcitonic strong coupling has ushered in an era of room‐temperature quantum electrodynamics at the nanoscale. Realizing its potential applications from single‐molecule spectroscopy to technologies on industrial level requires scalable and mass‐producible plasmonic cavities that provide ease access control for emitters. Here, a strategy multidimensional hotspot engineering is proposed via rational selection substrates, which facilitates elevation gold bowtie nanocavity top device...
Interactions between plasmons and exciton nanoemitters in plexcitonic systems lead to fast intense luminescence, desirable optoelectonic devices, ultrafast optical switches quantum information science. While luminescence enhancement through exciton-plasmon coupling has thus far been mostly demonstrated micro- nanoscale structures, analogous demonstrations bulk materials have largely neglected. Here we present a nanocomposite glass doped with cadmium telluride dots (CdTe QDs) silver...
We report theoretical statistics of 1- and 2-qubit (bipartite) systems, namely, photon antibunching entanglement, near-field excited quantum emitters. The sub-diffraction focusing a plasmonic waveguide is shown to generate enough power over sufficiently small region (<50 × 50 nm2) strongly drive This enables ultrafast (10–14 s) single-photon emission as well creates entangled states between two emitters when performing controlled-NOT operation. A comparative analysis silicon near-zero index...
For a quantum Internet, one needs reliable sources of entangled particles that are compatible with measurement techniques enabling time-dependent, error correction. Ideally, they will be operable at room temperature manageable decoherence versus generation time. To accomplish this, we theoretically establish scalable, plasmonically based archetype uses dots (QD) as emitters, known for relatively low rates near temperature, excited using subdiffracted light from near-field transducer (NFT)....
We propose a smooth pseudopotential for the contact interaction acting between ultracold atoms confined to two dimensions. The reproduces scattering properties of repulsive up 200 times more accurately than hard disk potential, and in attractive branch gives tenfold improvement accuracy over square well potential. Furthermore, potential enables diffusion Monte Carlo simulations gas be run 15 quicker was previously possible.
Emission properties of a quantum emitter can be significantly modified inside nanometre-sized gaps between two plasmonic nanostructures. This forms nanoscopic optical cavity which allows single-molecule detection and strong-coupling at room temperature. However, resonances nanocavity are highly sensitive to the exact gap morphology. In this article, we shed light on effect morphology faceted nanoparticle-on-mirror (NPoM) their interaction with emitters. We find that increasing facet width...
Plasmonic nanoantennas are able to produce extreme enhancements by concentrating electromagnetic fields into sub-wavelength volumes. Recently, one of the most commonly used is nanoparticle-on-mirror geometry, which allowed for room temperature strong coupling a single molecule. Very few studies offer analysis near-field mode decompositions, and they mainly focus on spherical and/or cylindrically-faceted geometries. Perfectly nanoparticles not easy fabricate, with recent publications...
Recent experiments and kinetic Monte Carlo (KMC) simulations [H. Greve et al., Appl. Phys. Lett. 88, 123103 (2006), L. Rosenthal J. 114, 044305 (2013)] demonstrated that physical vapor co-deposition of a metal alloy (Fe-Ni-Co) polymer (Teflon AF) is suitable method to grow magnetic nanocolumns in self-organized one-step process. While only thermal sources have been used so far, this work, we analyze the feasibility process for case sputtering source. For purpose, extend our previous...
An emitter in the vicinity of a metal nanostructure is quenched by its decay through non-radiative channels, leading to belief zone inactivity for emitters placed within $<$10nm plasmonic nanostructure. Here we demonstrate that tightly-coupled resonators forming nanocavities "quenching quenched" due plasmon mixing. Unlike isolated nanoparticles, show mode hybridization which massively enhances excitation and via radiative channels. This creates ideal conditions realizing single-molecule...
We explore the entanglement of quantum emitters using subdiffracted light within a near-field plasmonic environment. Results show possibilities for performance operations fully integrated photonic and waveguides on ultrafast time scales.
Fluorescence emission of a quantum emitter is dominated by its optical environment, and it was proven that an quenched when placed too closed to metal nanoparticles. Here, we present the spatio-temporal dynamics demonstrate quenching can in fact be suppressed plasmonic nanocavities. By varying lateral position through DNA-origami technique, our results are confirmed with experimental measurements.