A5062516241- Strong Light-Matter Interactions
- Thermal Radiation and Cooling Technologies
- Plasmonic and Surface Plasmon Research
- Molecular Junctions and Nanostructures
- Mechanical and Optical Resonators
- Spectroscopy and Quantum Chemical Studies
- Photonic Crystals and Applications
- Quantum and electron transport phenomena
- Photonic and Optical Devices
- Radiation Therapy and Dosimetry
- Inorganic Chemistry and Materials
- Photochemistry and Electron Transfer Studies
- Optical properties and cooling technologies in crystalline materials
- Gyrotron and Vacuum Electronics Research
- Metamaterials and Metasurfaces Applications
- Semiconductor Quantum Structures and Devices
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Advanced X-ray Imaging Techniques
- Chemical Reactions and Isotopes
- Organometallic Complex Synthesis and Catalysis
- Particle accelerators and beam dynamics
Fermi National Accelerator Laboratory
2025
University of Sheffield
2020-2023
Leipzig University
2023
In a major step toward the development of quantum battery, superabsorption has been achieved in an organic microcavity.
Exciton-polaritons in 2D lattice geometries now attract considerable attention as systems which to explore new physics. However, such structures are relatively difficult fabricate this can involve sophisticated milling or etching of cavity layers create arrays defects. Here, a straightforward technique is reported that allows rapid fabrication polariton lattices operate at room temperature. Specifically, laser patterning has been used write square defects into sacrificial polymer layer. An...
We have developed a simplified approach to fabricate high-reflectivity mirrors suitable for applications in strongly-coupled organic-semiconductor microcavity. Such are based on small number of quarter-wave dielectric pairs deposited top thick silver film that combine high reflectivity and broad bandwidth. Using this approach, we construct microcavity containing the molecular dye BODIPY-Br which bottom cavity mirror is composed layer coated by SiO2 Nb2O5 film, show undergoes polariton...
We have fabricated organic semiconductor microcavities having an extended optical path-length (up to 2 µm) that contain J-aggregates of a cyanine dye. These structures are studied using optical-reflectivity and found be characterized by series polaritonic modes. By changing the effective oscillator strength dye within cavity, we evidence transition from “normal” strong coupling in which photon modes coupled one another via excitonic molecular state photon-modes become decoupled. use...
Fourier-plane microscopy is a powerful tool for measuring the angular optical response of plethora materials and photonic devices. Among them, microcavities feature distinctive energy-momentum dispersions, crucial broad range fundamental studies applications. However, whole momentum space (k-space) with sufficient spectral resolution using standard spectroscopic techniques challenging, requiring long alignment-sensitive scans. Here, we introduce k-space hyperspectral microscope, which uses...
We have fabricated organic polariton microcavities that exhibit remarkable photostability, even in the condensation regime.
Abstract The manipulation of exciton–polaritons and their condensates is great interest due to applications in polariton simulators high‐speed, all‐optical logic devices. Until now, methods trapping manipulating such are not dynamically reconfigurable or resulted an undesirable reduction the exciton–photon coupling strength. Here, a new strategy for ultrafast control resonances via transient modification optical cavity mode presented. Multilayer organic semiconductor microcavities that...
Molecular dyes are finding more and applications in photonics quantum technologies, such as polaritonic optical microcavities, organic batteries single-photon emitters for sensing metrology. For all these applications, it is of crucial importance to characterize the dephasing mechanisms. In this work we use two-dimensional electronic spectroscopy (2DES) study temperature dependent processes prototypical dye Lumogen-F orange. We model 2DES maps using Bloch equations a two-level system obtain...
The development of high-speed, all-optical polariton logic devices underlies emerging unconventional computing technologies and relies on advancing techniques to reversibly manipulate the spatial extent energy polartion condensates. We investigate active control condensates independent polariton, gain-inducing excitation profile. This is achieved by introducing an extra intracavity semiconductor layer, nonresonant cavity mode. Partial saturation optical absorption in uncoupled layer enables...
Organic semiconductors are a promising platform for ambient polaritonics. Several applications, such as polariton routers, and many-body condensed matter phenomena currently hindered due to the ultra-short lifetimes in organics. Here, we employ single-shot dispersion imaging technique, using 4 ns long non-resonant excitation pulses, study lasing λ/2 planar organic microcavity filled with BODIPY-Br dye molecules. At power threshold density of 1.5 MW/cm2, observe transition quasi-steady state,...
Abstract Quantum batteries harness the unique properties of quantum mechanics to enhance energy storage compared conventional batteries. In particular, they are predicted undergo superextensive charging, where with larger capacity actually take less time charge. Up until now however, have not been experimentally demonstrated, due challenges in coherent control. Here we implement an array two-level systems coupled a photonic mode realise Dicke battery. Our battery is constructed microcavity...
By ultrafast spectroscopy we provide experimental evidence of superextensive charging in organic quantum batteries constructed as microcavities based on a double dielectric-mirror structure containing thin film Lumogen-F dye blended polystyrene matrix.
The manipulation of exciton-polaritons and their condensates is great interest due to applications in polariton simulators high-speed, all-optical logic devices. Until now, methods trapping manipulating such are not dynamically reconfigurable or result an undesirable reduction the exciton-photon coupling strength. Here, we present a new strategy for ultrafast control resonances via transient modification optical cavity mode. We have constructed multilayer organic semiconductor microcavities...
Fourier-plane optical microscopy is a powerful technique for studying the angularly-resolved properties of plethora materials and devices. The information about direction emission light by sample extracted imaging objective back focal plane on two-dimensional detector, via suitable system. This able to resolve angular spectrum over wide field view, but typically it doesn't provide any spectral information, since integrates intensity broad wavelength range. On other hand, advanced...
We investigate active spatial control of polariton condensates independently the polariton-, gain-inducing excitation profile. This is achieved by introducing an extra intracavity semiconductor layer, non-resonant to cavity mode. Saturation optical absorption in uncoupled layer enables ultra-fast modulation effective refractive index and, through excited-state absorption, dissipation. Utilising these mechanisms, we demonstrate over profile and density a condensate at room temperature.
Two novel tBu-CBZ substituted DMAC-TRZ derivatives are presented, characterised, and their properties compared with those of DMAC-TRZ. A comparison between the solution film absorption spectra additional cyclic voltammetry data is consistent presence a previously unknown geometry change in DMAC solution. This appears to be blocked synthesised molecules solid state. In addition, it found that transient photoluminescence not possible interpret within bounds modern theory. Finally, potential...
Strongly coupled organic microcavities are up-and-coming material systems for ambient polaritonics. A broad range of suitable materials made possible the experimental observation polariton lasing across whole visible range, as well device-concepts ranging from ultra-fast transistors and all-optical logic gates to single-photon switching, all at room temperature under conditions. Unlike case inorganic semiconductor microcavities, where continuous-wave excitation allows replenishment particle...