A5015558003- Cold Atom Physics and Bose-Einstein Condensates
- Orbital Angular Momentum in Optics
- Plasmonic and Surface Plasmon Research
- Atomic and Subatomic Physics Research
- Quantum Information and Cryptography
- Photonic Crystals and Applications
- Metamaterials and Metasurfaces Applications
- Perovskite Materials and Applications
- Photonic and Optical Devices
- Computational Drug Discovery Methods
- Advanced Frequency and Time Standards
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Atmospheric Ozone and Climate
- Chemical Thermodynamics and Molecular Structure
- Laser-Plasma Interactions and Diagnostics
- Dark Matter and Cosmic Phenomena
- Crystallography and molecular interactions
- Organic Light-Emitting Diodes Research
- Various Chemistry Research Topics
- Particle Accelerators and Free-Electron Lasers
- Quantum optics and atomic interactions
- Luminescence and Fluorescent Materials
- Radioactive Decay and Measurement Techniques
- Organic Chemistry Cycloaddition Reactions
Institute for Atomic and Molecular Physics
2022-2025
Foundation for Research and Technology Hellas
2020-2021
Indian Institute of Science Education and Research Kolkata
2020
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
Abstract Polarized light is critical for a wide range of applications, but usually generated by filtering unpolarized light, which leads to substantial energy losses and requires additional optics. Here we demonstrate the direct emission linearly polarized from light-emitting diodes made CsPbI 3 perovskite nanoplatelet superlattices. The use solvents with different vapour pressures enables self-assembly nanoplatelets fine control over their orientation (either face-up or edge-up) therefore...
Dense plasmon lattices are promising as experimentally accessible implementations of seminal tight-binding Hamiltonians, but the plasmonic dispersion interest lies far beyond light line and is thereby inaccessible in far-field optical experiments. In this work, we make guided mode dense hexagonal antenna visible by bandfolding induced perturbative scatterer size modulations that introduce supercell periodicity. We present fluorescence enhancement experiments reciprocity-based T-matrix...
Temporal dynamics of confined optical fields can provide valuable insights into light-matter interactions in complex systems, going beyond their frequency-domain description. Here, we present a new experimental approach based on interferometric autocorrelation (IAC) that reveals the near-fields enhanced by collective resonances periodic metasurfaces. We focus probing known as waveguide-plasmon polaritons, which are supported plasmonic nanoparticle arrays coupled to slab waveguide. To probe...
Lead-halide perovskites offer excellent properties for lighting and display applications. Nanopatterning perovskite films could enable perovskite-based devices with designer properties, increasing their performance adding novel functionalities. We demonstrate the potential of nanopatterning achieving light emission a film into specific angular range by introducing periodic sol-gel structures between injection emissive layer using substrate conformal imprint lithography (SCIL). Structural...
We demonstrate that tight focusing of a circularly polarized Gaussian beam in optical tweezers leads to spin-momentum locking—with the transverse momentum density (Poynting vector) being helicity-dependent, while spin angular becomes independent helicity. further use stratified medium path trapping our setup enhance magnitude and electric field intensity radial direction with respect axis cause them significantly overlap. This overlap allows us experimentally observe circular motion...
Spontaneous symmetry breaking (SSB) is key for our understanding of phase transitions and the spontaneous emergence order. In this work, we report that, a two-dimensional (2D) periodic metasurface with gain, SSB occurs in lasing transition. We study diffractive hexagonal plasmon nanoparticle lattices, where K -points momentum space provide two modes that are degenerate frequency identically distributed space. Using femtosecond pulses to energize gain medium, simultaneously capture...
Prediction of number π-bonds, σ-bonds, single and triple bonds aliphatic unsaturated open chain cycloalkynes is a vitally important tool for students chemistry at undergraduate graduate level solving different kinds problems regarding chemical reactions. In this manuscript, we try to present simple innovative method easy calculation with the help completely 8 (eight) new formulae.
Phosphor-converted micro-light emitting diodes (micro-LEDs) are a crucial technology for display applications but face significant challenges in light extraction because of the high refractive index blue pump die chip. In this study, we design and experimentally demonstrate nanophotonic approach that overcomes issue, achieving up to 3-fold increase efficiency. Our involves engineering local density optical states (LDOS) generate quasi-guided modes within phosphor layer by strategically...
We report a novel Optical Beam Steering Technique (OBST) for fiber to free-space coupling with extreme stability of the efficiency and high tolerance temperature fluctuations. The compact optical system is based near monolithic (ZERODUR) couplers relies on wedges plates perform fine-steering beam. In our approach, we use coarsely aligned then fine alignment using plates. This separation course tuning significantly reduces manufacturing assembly requirements couplers. At same time, it results...
Polarised light is critical for a wide range of applications, but usually generated by filtering unpolarised light, which leads to significant energy losses and requires additional optics. Herein, the direct emission linearly-polarised achieved from light-emitting diodes (LEDs) made CsPbI3 perovskite nanoplatelet superlattices. Through use solvents with different vapour pressures, self-assembly nanoplatelets enable fine control over orientation (either face-up or edge-up) therefore...
Spontaneous symmetry breaking (SSB) is key for our understanding of phase transitions and the spontaneous emergence order. Photonics provide versatile systems to study SSB. In this work, we report that a two-dimensional (2D) periodic nonlocal metasurface with gain, SSB occurs in lasing transition, parity symmetry. We diffractive hexagonal plasmon nanoparticle lattices, where K-points momentum space two modes are exactly degenerate frequency identically distributed space. Using femtosecond...
We demonstrate that tight focusing of a circularly polarized Gaussian beam in optical tweezers leads to spin-momentum locking - with the transverse spin angular momentum density being independent helicity, while (Poynting vector) becomes helicity dependent. Our theoretical calculations, numerical simulations, and experiments reveal presence stratified medium path trapping significantly enhances magnitude radial direction respect axis, likewise, also high off-axial intensity. This overlap...