10 research outputs found
Spectroscopy and Biosensing with Optically Resonant Dielectric Nanostructures
Resonant dielectric nanoparticles (RDNs) made of materials with large
positive dielectric permittivity, such as Si, GaP, GaAs, have become a powerful
platform for modern light science, enabling various fascinating applications in
nanophotonics and quantum optics. In addition to light localization at the
nanoscale, dielectric nanostructures provide electric and magnetic resonant
responses throughout the visible and infrared spectrum, low dissipative losses
and optical heating, low doping effect and absence of quenching, which are
interesting for spectroscopy and biosensing applications. In this review, we
present state-of-the-art applications of optically resonant high-index
dielectric nanostructures as a multifunctional platform for light-matter
interactions. Nanoscale control of quantum emitters and applications for
enhanced spectroscopy including fluorescence spectroscopy, surface-enhanced
Raman scattering (SERS), biosensing, and lab-on-a-chip technology are surveyed.
We describe the theoretical background underlying these effects, overview
realizations of specific resonant dielectric nanostructures and hybrid
excitonic systems, and outlook the challenges in this field, which remain open
to future research
Quantum games and interactive tools for quantum technologies outreach and education
We provide an extensive overview of a wide range of quantum games and interactive tools that have been employed by the quantum community in recent years. We present selected tools as described by their developers, including "Hello Quantum, Hello Qiskit, Particle in a Box, Psi and Delta, QPlayLearn, Virtual Lab by Quantum Flytrap, Quantum Odyssey, ScienceAtHome, and the Virtual Quantum Optics Laboratory." In addition, we present events for quantum game development: hackathons, game jams, and semester projects. Furthermore, we discuss the Quantum Technologies Education for Everyone (QUTE4E) pilot project, which illustrates an effective integration of these interactive tools with quantum outreach and education activities. Finally, we aim at providing guidelines for incorporating quantum games and interactive tools in pedagogic materials to make quantum technologies more accessible for a wider population. (C) The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License.Peer reviewe
Room-Temperature Exciton-Polariton Condensation in a Tunable Zero-Dimensional Microcavity
We create exciton-polaritons in a
zero-dimensional (0D) microcavity
filled with organic ladder-type conjugated polymer in the strong lightâmatter
interaction regime. Photonic confinement at wavelength scale is realized
in the longitudinal direction by two dielectric Bragg mirrors and
laterally by a submicron Gaussian-shaped defect. The cavity is separated
into two parts, allowing nanometer position control and enabling tuning
of the exciton and photon fractions of the polariton wave function.
Polariton condensation is achieved with nonresonant picosecond optical
excitation under ambient conditions and evidenced by a threshold behavior
with a nonlinear increase in the emission intensity, line narrowing,
and a blue shift in the emission peak. Furthermore, angular emission
spectra show that condensation occurs in the ground state of the 0D
cavity, and first-order coherence measurements reveal the coherent
nature. These experiments open the door for polariton quantum fluids
in complex external potentials at room temperature