Malayalam film IllayarajaTwitterMalayalam film Illayaraja, which has been written and directed by Madhav Ramadasan, is set for grand release across UAE and GCC on May 2. Indywood Distribution Network booked good numbers of screens in these regions.Illayaraja is a drama film, which has been produced by Sajith Krishna, Jayaraj T Krishnan and Binish Babu under the banners of Movie Musical Cutz and Mumbai Cine Talkies. The film stars Guinness Pakru in the lead role, with Gokul Suresh, Deepak Parambol and Harisree Ashokan in supporting roles. Ratheesh Vega has composed its background score and songs and Pappinu has cranked the camera for it.Director Madhav Ramdasan has beautifully portrayed the life of a family residing in Thrissur and the happiness, the sorrows and the struggles they share under their small roof. He explores the likes and desires of the children, the attitudes of various sections of the society and the beauty in finding contentment in the little things.Mollywood has made movies on gifted young children earlier and they have become a great success with the audience. Ilayaraja is no different from them, as it is about child epitome, struggles of trying to fit into the society and the roles of parents who try to encourage their kids’ development could be seen. It is a feel-good tale with noble intentions. It is meant to cater to family crowds.Illayaraja is said to have scored particularly well in two departments, sound and photography. The actors in the movie have done a fantastic job. Harisree Ashokan as grandpa and Anil Nair as the loan shark have showcased a remarkable performance. The music in the movie beautifully blends with the story and the cinematography too received a special attention post its release in India.
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. A research group in the UK has crafted a source of single photons – photons emitted one by one – with a convenience and ease of use they liken to “plug and play” computer hardware devices. This is a key step forward in single-photon production, which is essential to successful, secure quantum communication, the transmission of data using individual photons to carry bits of information. Quantum sensor breakthrough using naturally occurring vibrations in artificial atoms Citation: ‘Plug and Play’ Source of Single Photons (2007, March 15) retrieved 18 August 2019 from https://phys.org/news/2007-03-source-photons.html A sketch of the single-photon source with the integrated optical-fiber bundle. The quantum-dot wafer is mounted onto the sample holder (right inset) with the fiber bundle attached directly to its top surface. The “WDM” is the beamsplitter. Explore further The device’s plug-and-play quality lies in its novel design. A bundle of optical fibers is coupled with – or “plugged into,” so to speak – a wafer patterned with quantum dots. Quantum dots are tiny atom clusters of a semiconducting material, such as silicon, that contain as few as a hundred atoms and play a key role in many single-photon-production schemes. In this case, they emit photons when excited with laser light.“Pairing the optical fiber bundle and the quantum-dot wafer presents a way to implement real quantum communication that other single-photon sources do not have,” said lead researcher Xuilai Xu, a scientist at Hitachi Europe Ltd. in Cambridge, to PhysOrg.com. Xu and his colleagues at Hitachi performed the study in collaboration with researchers at the University of Cambridge.The wafer is mounted onto a sample holder, immersed in liquid helium, and then excited with a laser. During this process, the dots’ atoms absorb the laser photons and jump to a higher energy state, but almost instantly re-emit the photons and return to a lower-energy state. The emitted photons travel through the fiber bundle to a beamsplitter, which sends the emitted photons out one fiber and the residual laser photons out another.Accurately determining if the source produced single photons was a tricky task. Xu and his colleagues had to use several devices to analyze the emitted photon signal. These included a spectrometer, which measured the intensity of the light, and two single-photon-counting “photodiodes,” semiconductor devices used to detect light. They also applied a filter to subtract out background photons, ensuring that the photons emitted from the quantum dots were not mixed with photons emitted from the wafer’s “wetting layer,” a thin layer of residue formed on the surface of the dots as the wafer was created.Analysis of the data produced by the measurement and detection devices showed that the photons tended not to be emitted in pairs. And, according to the researchers’ calculations, the addition of the filter, when it was placed at the proper angle, greatly reduced the probability that photon counters would detect more than one photon at once – specifically, the likelihood of this was reduced 100-fold.“This indicates a nearly ideal single-photon source,” said Xu.To test the stability of their design, the group measured the photons emitted from 27 quantum dots, traveling through different optical fibers in the bundle, over a 24-day period. The results showed the photon source to be stable over a timescale of weeks, with no evidence that a considerably longer period would result in degradation.Citation: Xiulai Xu, Ian Toft, Richard T. Phillips, Jonathan Mar, Kiyotaka Hammura, and David A. Williams, “’Plug and play’ single-photon sources.” Appl. Phys. Lett. 90 061103 (2007)Copyright 2007 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com.