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We report here a wet chemical approach towards the synthesis of Copper Oxide (CuO) Nanoparticles. CuO Nanoparticles were produced in the reaction between Copper sulphate and sodium hydroxide (NaOH) at room temperature. The fabricated nanoparticles were characterized using X-ray diffraction to study the crystallinity, purity and crystal structure of the nanoparticles. The morphology was observed in...
A novel architecture of one-dimensional photonic crystal membrane (PCM) reflectors embodying a heterostructure is proposed as a robust design aimed at a 3-D efficient confinement of light in single-mode polarization-controlled 1.55-μm vertical-cavity surface-emitting laser (VCSEL) microsources for heterogeneous integration on complementary metal-oxide-semiconductor (CMOS). On the basis of a theoretical...
The nonlinear optical properties of aligned multiwalled carbon nanotubes (MWCNTS) are studied. Measured photoluminescence spectrum of MWCNTs film reveals that there are two emission peaks at 450 nm and 470 nm while MWCNTs are excited by 675 nm photons and 704 nm photons respectively. The MWCNTs absorption spectrum indicated that there are a peak point at 450 nm and a valley bottom at 470 nm. An energy...
High quality semiconductor microcavities have attracted considerable attention as a compact solid state platform for the investigation of light-matter interaction between photons and excitons in single quantum dots. Owing to a combined optimization of the design (increased number of mirror pairs), the growth conditions (V/III ratio) and the dry etching process we were able to achieve record quality...
We report an almost ideal realization of wheeler's "delayed-choice" experiment where the light pulses are true single photons, allowing unambiguous which-way measurements. The clock-triggered single-photon source at the heart of the experiment, previously developed for quantum key distribution, is based on the pulsed, optically excited photoluminescence of a single N-V colour centre in a...
Polarisation-entangled photon pairs are generated from single InAs quantum dots. This is achieved by restoring the degeneracy of the exciton level with an in-plane magnetic field or by careful selection of the dot.
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