The integration of InAs/GaAs quantum dots into nanophotonic cavities has led to impressive demonstrations of cavity quantum electrodynamics. However, these demonstrations are primarily based on two-level excitonic systems. Efforts to couple long-lived quantum dot electron spin states with a cavity are only now succeeding. Here we report a two-spin-cavity system, achieved by embedding an InAs qu...

The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as...

In this paper, we describe the effect of local electric field enhancement due to existence photonic edge states in a nanoplasmonic crystal. These can be excited by normal incident wave and are localized along continuous line defect, where translational symmetry is broken. The crystal formed triangular lattice SiO2 cylinders on top Ag thin films. Numerical simulations demonstrated that modes con...

We demonstrate two-dimensional photonic crystal cavities operating at telecommunication wavelengths in a single-crystal diamond membrane. use high-optical-quality and thin (~ 300 nm) membrane, supported by polycrystalline frame, to realize fully suspended with high theoretical quality factor of ~ $8\times10^6$ relatively small mode volume ~2$({\lambda}/n)^3$. The are fabricated the membrane usi...

Cellulose nanocrystals (CNCs) possess the ability to form helical periodic structures that generate structural colors. Due helicity, such self-assembled cellulose preferentially reflect left-handed circularly polarized light of certain colors, while they remain transparent right-handed light. This study shows combination with a liquid crystal enables modulation optical response obtain reflectio...

In this paper, we study the photonic resonance states and transmission spectra of coupled waveguides made from heterostructure photonic crystals. We consider photonic crystal waveguides made from three photonic crystals A, B and C, where the waveguide heterostructure is denoted as B/A/C/A/B. Due to the band structure engineering, light is confined within crystal A, which thus act as waveguides....

Integrated quantum photonics (IQP) provides a path to practical, scalable computation, communications and information processing. Realization of an IQP platform requires controlled engineering many nanophotonic components. However, the range materials for monolithic platforms is limited by simultaneous need high-quality light sources, high optical performance, availability nanofabrication techn...

In contrast to designing nanophotonic devices by tuning a handful of device parameters, we have developed a computational method which utilizes the full parameter space to design linear nanophotonic devices. We show that our method may indeed be capable of designing any linear nanophotonic device by demonstrating designed structures which are fully three-dimensional and multi-modal, exhibit nov...