Precision depositing quantum dot on nanofiber achieved for high security fast internet

Quantum dot is now becoming hottest subject at CES2015 for making new gen TVs. A quantum dot is a semiconductor nanostructure whose photonic properties such as polarization and wavelength can be controlled. The quantum dot technology is also used in high speed communication replacing slower electronics communication. The preferred method to have a highly secure and high-speed Internet is to have something called quantum Internet, where photons in particular quantum state or transmitted to generate a secure cryptography key. There is a technology called fiber in-line required to develop such distributed quantum networks. Japanese researcher Kohzo Hakuta, Director of the Center for Photonic Innovations at the University of Electro-Communications (UEC) supported by his colleagues and other researchers at Vietnam, India, China and New Zealand have developed such fiber in-line technology. They have developed a combination of technologies which includes fabrication of tapered nanofiber, a method to pick and place single quantum dots from colloidal solution and deposit it on the nanofiber by using a computer controlled pico-liter liquid dispenser combined with an inverted microscope and precision translation stages. Researchers claim they could deposit single quantum dot with spatial accuracy better than 3μm, and importantly, the maximum photon channelling efficiency is measured...