As for the range of the microphone, their tests showed that it can pick up regular-volume voices from 15 feet away. As for power consumption, the Ubi in normal mode will draw less than 3 W. When fully functioning and with LEDs at full power, the level may go up to 10 W. The team said the Ubi is packed with sensors—temperature, humidity, air pressure and ambient light sensors—that can provide feedback information for various rooms in a home. With an open platform, the Ubi is based on Android. and carries 1 GB RAM. The company launched Ubi as a Kickstarter project this summer, and they raised $229,594 with 1,190 backers. They now have announced that Ubi is on pre-order at $219 per device, available in April next year. A ten-pack is $1399. When the Ubi becomes available for shipment, the price per Ubi will be $269.They see the device as going over well with users in larger-size residences where information from the Ubi about rooms—such as baby monitoring, or managing thermostats—would be useful. They also said they see “huge potential” for Ubi as an assistive device for people with physical impairments who, for example, may have limited mobility or vision.The Ubi team also has a message for developers. The Ubi, on an open-platform, can be tapped into. Unified Computer Intelligence intends to release an SDK “with hooks into all the functionalities of the Ubi.” Citation: Always-on Android voice-controlled Ubi starts pre-orders (2012, November 4) retrieved 18 August 2019 from https://phys.org/news/2012-11-always-on-android-voice-controlled-ubi-pre-orders.html More information: www.kickstarter.com/projects/6 … e-activated-and-al-0 Company uses Kinect to create a touchscreen out of any surface (w/ Video) Explore further (Phys.org)—The Toronto-based company Unified Computer Intelligence Corporation has announced that its Ubi is now available for pre-order. Ubi, a Kickstarter project, was named to serve as a shorthand reminder of ubiquitous computing. The Ubi is a plug-in device with speakers, a microphone, and multicolored LED indicator lights. You plug it into a wall outlet, connecting it to your home’s WiFi, and the Ubi becomes an always-on, hands free, computer device that stays dormant until you say “Ubi.” The word Ubi wakes it up to receive a verbal command or question (“How many teaspoons in an ounce?”). The company’s three-engineer team, Amin Abdossalami, Mahyar Fotoohi, and Leor Greble, promote their device as always listening, always ready to help, as it will either talk back to you with the information you seek, or will relay information through its lights. Commenting on the stage of voice recognition for Internet search, they said that they did not believe a project such as the Ubi would have been possible a year ago, but “we’re confident that we’re now at a point where we can use existing services for speech recognition.” 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. © 2012 Phys.org
Figure of the “freezing surface” of quantum discord-type correlations. Credit: Marco Cianciaruso, et al. (Phys.org)—Physicists who work on quantum technologies are always looking for ways to manage decoherence, which occurs when a quantum system unavoidably interacts with the surrounding environment. In the past few years, scientists have discovered that some quantum correlations can be “frozen” in a constant state and remain that way in the presence of noise, potentially offering a protective mechanism against decoherence. So far, however, quantum freezing has been shown to exist only on a case-by-case basis and under certain conditions, and its potential protective effect has not been fully exploited. Explore further In this context, the freezing phenomenon is particularly interesting because it is exhibited specifically by discord-type correlations, while a similar feature for entanglement has remained elusive. This difference aligns with other emerging research that suggests that discord-type quantum correlations are more robust than entanglement against noise. For instance, entanglement can suffer so-called “sudden death” when exposed to noise, but such rapid vanishing cannot been observed for discord-type correlations.In this sense, freezing can be considered a very extreme form of robustness to noise, as it could theoretically allow any quantum protocol to operate with a performance that is completely unaffected by noise. Such protection would be extraordinarily appealing for future developments of quantum technologies, including communication, computation, sensing, and metrology.The scientists’ proof of the universality of quantum freezing consists of a lengthy mathematical description, but they explain that the main requirement is that the method used to measure the discord-type correlations must be a genuine distance-based geometric method, “exploiting distances which are convex and non-increasing under quantum channels.” As long as the method meets these basic requirements, freezing occurs independent of the specific distance used. By proving universality, the results show that previous demonstrations of freezing were not merely mathematical accidents, but that the freezing of discord-type quantum correlations is a true physical phenomenon.The physicists’ additional finding—that a global quantum control channel can reverse the effects of decoherence for certain mixed states—could also have implications for quantum technologies, in particular quantum error correction. They explain that the channel can be understood as “refocusing” the qubits that have been affected by noise.The proof still leaves room for further research aimed at proving the universality of freezing from only the basic properties of quantum correlations, without the need to use a geometric method. The results of such a study could lead to a better understanding of the physical origins of frozen quantum correlations, and may even shed light on the scientists’ hunch that the phenomenon is related to classical correlations.”We are currently researching conditions for other quantum features to remain frozen or almost frozen under various noisy dynamics,” said Adesso, at the University of Nottingham. “In another paper, some of us have already proven that quantum coherence can remain frozen in the same conditions as discord-type correlations, which is quite a strong result since long-lived coherence is a useful resource for physical and biological sciences. We are also working on experimental investigations with quantum optics and nuclear magnetic resonance, with the aim to exploit mixed quantum states with frozen discord in order to preserve their operational value in applications such as quantum metrology. The physical cause of freezing is not known yet, but our results suggest that a deep physical origin of this phenomenon is expected so that we are investigating it.” © 2015 Phys.org 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. Citation: Physicists show ‘quantum freezing phenomenon’ is universal (2015, April 9) retrieved 18 August 2019 from https://phys.org/news/2015-04-physicists-quantum-phenomenon-universal.html More information: Marco Cianciaruso, et al. “Universal freezing of quantum correlations within the geometric approach.” To be published.Also at: arXiv:1411.2978 [quant-ph] Quantum correlations make you never fail a test again Journal information: Scientific Reports Now in a new paper to be published in Nature Scientific Reports, physicists Marco Cianciaruso, Thomas Bromley, Wojciech Roga, Rosario Lo Franco, and Gerardo Adesso have shown that the freezing of quantum correlations is universal—that is, it is independent of the method used for measuring the correlations. While working on this proof, the scientists also found that it may be possible to not just prevent but also reverse the effects of decoherence under certain circumstances, which they show by demonstrating the existence of an intriguing new phenomenon modelled by a global rephasing channel.”The greatest significance of the work is to show that a general form of quantum correlations must remain frozen and protected in the presence of some, usually detrimental, decoherence effects,” Lo Franco, who is with the University of Nottingham, the University of Palermo, and the University of São Paulo, told Phys.org. “This fact implies that any further well-defined measure of quantum correlations must freeze during the evolution under the same conditions. Our work thus appears to settle the debate about the universality of the freezing phenomenon of discord-based quantum correlations.”Overall, much of the research on quantum correlations has focused on entanglement, which is one specific type of quantum correlation. As the physicists explain in their paper, there is a general consensus that all quantum correlations between two systems in a pure state can be considered entanglement. Although it sounds like entanglement is the dominant type of quantum correlation, in reality entanglement may represent a negligibly small portion of all quantum correlations because not all states are pure. When two systems are exposed to a noisy environment, they will generally be in a mixed state, and a certain portion of mixed states are non-entangled. Consequently, quantum correlations between these systems do not necessarily reduce to entanglement, but can manifest in a more general form called discord-type quantum correlations. Since realistic quantum systems often involve mixed states, discord-type correlations are much more prevalent than entanglement, although they are not as well understood.
© 2015 Phys.org More information: Real-time tunable lasing from plasmonic nanocavity arrays, Nature Communications 6, Article number: 6939 DOI: 10.1038/ncomms7939AbstractPlasmon lasers can support ultrasmall mode confinement and ultrafast dynamics with device feature sizes below the diffraction limit. However, most plasmon-based nanolasers rely on solid gain materials (inorganic semiconducting nanowire or organic dye in a solid matrix) that preclude the possibility of dynamic tuning. Here we report an approach to achieve real-time, tunable lattice plasmon lasing based on arrays of gold nanoparticles and liquid gain materials. Optically pumped arrays of gold nanoparticles surrounded by liquid dye molecules exhibit lasing emission that can be tuned as a function of the dielectric environment. Wavelength-dependent time-resolved experiments show distinct lifetime characteristics below and above the lasing threshold. By integrating gold nanoparticle arrays within microfluidic channels and flowing in liquid gain materials with different refractive indices, we achieve dynamic tuning of the plasmon lasing wavelength. Tunable lattice plasmon lasers offer prospects to enhance and detect weak physical and chemical processes on the nanoscale in real time.Press release Traditionally, light can only ever be focused down to a point half the size of its frequency—aka the diffraction limit. Scientists have found a way around that limit, however, by building what are known as plasmon lasers, which are lasers that couple their beam with plasmons (oscillating surface electrons) on the surface of metals—gold for example, arranged in an array. But that approach has had its limitations as well, because it has had to rely on a solid bit of material called the gain—such lasers could not be tuned very easily, and not in real-time at all. In this new effort, the researchers report that they have found a way to use a liquid material as the gain, and because of that, are able to tune their laser in real time.To make the new kind of laser, the team used a gold array with a plasmonic nanocavity array and a liquid dye solvent as the gain material. Doing so allows for changing the wavelength of the laser by changing the refractive index of the dye.As the team notes, using liquid in the array has two main advantages over those based on a solid gain—the first is that they dye can be quickly dissolved in different solvents with different refractive indexes, allowing for tuning the laser in real time. The second is that because the gain is liquid, it can be fed via channel into the cavity, which allows for dynamic tuning by using different liquids.The researchers suggest that a laser based on the one they have built could be used as part of highly sensitive sensors to note very minor changes in chemical processes—biomedical applications come to mind, such as a tool for use in early cancer detection. The team also believes their laser could be integrated with other electronics to create a lab-on-a-chip device. Explore further Lasing emissions from Au NP arrays tuned in real time. Credit: Nature Communications 6, Article number: 6939 doi:10.1038/ncomms7939 Journal information: Nature Communications (Phys.org)—A combined team of researchers from Northwestern and Duke Universities has succeeded in building a plasmon laser that is tunable in real-time. In their paper published in the journal Nature Communications, the team describes how they built their device and to what uses it might be put. Researchers take a step towards development of optical single-phonon detector Citation: Researchers build real-time tunable plasmon laser (2015, April 24) retrieved 18 August 2019 from https://phys.org/news/2015-04-real-time-tunable-plasmon-laser.html 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.
Exploring salt as symbol of non-violence and investigating sarvodaya theory in practice of non-violence, tolerance, peace and harmony through the narratives of swadeshi politics, New Delhi-based artist and poet Shelly Jyoti brings forth a new body of work in a solo show titled Salt: The Great March by re-crafting contemporary quilt-making traditions in Azrakh textiles. These works draw upon the history of India’s colonial past and Mahatma Gandhi’s 1930 Dandi March, which began the Salt Satyagraha and became an important part of the Indian Independence movement. According to Gandhi, modern societies could become genuine, moral communities, only if the duty of citizenship was duly adhered to. This forms the basis of Jyoti’s new suite of works, which is in continuation to her previous Indigo: Neel Darpan series. Neel Darpan (1860) is a literary text symbolic of yet another anti-colonial, non-violence movement that took place in 1917-18 as the champaran movement for indigo farmers in India. Also Read – ‘Playing Jojo was emotionally exhausting’In her new body of works, Jyoti explores the possibilities of establishing alternative societies where Gandhian ideals of ‘swadharma’ and ‘sarvodya’ could be established through their sincere implementation. In a society where patriarchal values threaten the free existence of women, the artist feels that re-introducing Gandhian ideals with critical changes would function as a correctional force.Says the multi-faceted Jyoti, who also has the distinction of curating a show of traditional textiles for ICCR: ‘These works are in response to rape, molestation, problems of our patriarchal and masculinity driven society in 21st century. Such events are daily media news today.’ Also Read – Leslie doing new comedy special with NetflixWhile the twenty-five khadi artworks with quilting technique will be displayed as hanging tapestries, and Jyoti’s self-written poetry on the relevance of Dandi march plays in the background, the showstopper of the exhibition is a large scale installation titled Integrating Khadi which has been made using 30 metres of khadi and printed with Sanskrit calligraphy. WHERE: Indira Gandhi National Centre of ArtsWHEN: 28 September to 20 October, 11 am to 7 pm
Every Sunday, Café Uno organises a special kid’s club for all the little ones to have a day full of fun and frolic while their parents can let their hair down and relax.Children are engaged in creative activities such as clay modeling, painting competitions and young master chef competitions among other fun activities. The bouncy castle, ball pool and swings provide ample opportunity for them to run around. Magicians, tattoo artists, stilt walkers and Disney characters keep the young ones entertained and enthralled all afternoon. The brunch features an International cheese counter, exotic seafood bar, sushi, antipasti platters, a freshly baked bread station, Indian and Western delicacies to choose from. The cooking theatres featuring a different culinary style, showcases the best of International cuisines and a stage for Chefs’ engaging performances.The brunch is priced at Rs 3200 plus taxes per person with unlimited champagne, Rs 2500 plus taxes per person and Rs 1500 plus taxes (kids buffet).When: SundaysWhere: Cafe Uno, Shangri-La’s Eros Hotel
Darjeeling: Chief Minister Mamata Banerjee successfully sowed the seeds of a United Opposition against the saffron camp in the Darjeeling Hills on Tuesday.While the Gorkha Janmukti Morcha (GJM) came out in full support of the alliance, there were positive indications from the Gorkha National Liberation Front (GNLF) camp as well. The Chief Minister, on a tour of the Darjeeling district, held back-to-back meetings with the GNLF and the GJM on Tuesday at the Richmond Hill Government Guest House. In the meetings, she stressed the need for a United Opposition for the ouster of the BJP-led NDA government at the Centre. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killed”We are not going to favour the BJP and the NDA during the forthcoming Lok Sabha elections. We were there at the historic United India Rally at the Brigade Parade Ground in Kolkata on January 19,” stated Binoy Tamang, president, GJM. He also stated that Mamata Banerjee was the best choice as the Prime Ministerial candidate. “She managed to unite all the anti-BJP, anti-NDA camps and brought these power centres to a common platform. Her endeavour was highly appreciated by all the political stalwarts present at the rally,” added Tamang. He stated that he, along with the GJM, discussed election in the meeting with the Chief Minister. “However, we will only discuss the details regarding the candidate after the election is officially declared. With polls being declared, there will be meetings with Mamata Banerjee,” stated Tamang. Also Read – Bose & Gandhi: More similar than apart, says Sugata BoseA GNLF delegation also met the Chief Minister at Richmond Hill Government Guest House and submitted a memorandum. The delegation was led by GNLF president Mann Ghising. “In the bipartite talks with the Hill’s political outfits in 2017, the Chief Minister had invited proposals for a long-lasting political solution in the Hills. We have submitted a proposal for the same. However, she stated that she is not in a position to commit anything before the elections. She will call for another round of bipartite talks after the polls,” stated Niraj Zimba, spokesperson, GNLF. The GNLF has demanded that the Gorkhaland Territorial Administration (GTA) be replaced by a constitutionally guaranteed body with enhanced autonomy. “The GNLF party still feels that the 6th Schedule with due representation of the Scheduled Caste and the weaker sections could be considered as the most suitable and credible political solution for the Darjeeling Hills. We are not only hopeful but assuredly sure that under your ablest leadership and stewardship, the innocent and politically oppressed people of Darjeeling Hills will get justice which has been denied by earlier governments,” stated the memorandum. “We are optimistic that there will be a positive outcome. Mamata Banerjee delivers what she assures. From past experiences, we have seen that the BJP is full of false assurances only. We do not trust them anymore. The Chief Minister of Bengal should have a major role in national politics as she is undoubtedly the most popular leader in India. Brigade is an indicator that she is the only one who can pose a serious threat to the BJP. People of Bengal want to see her as the next Prime Minister,” added Zimba. With the fast changing political scenario, it will definitely be an uphill task for the saffron camp to retain the MP seat in Darjeeling constituency this time.
Kolkata: Chief Minister Mamata Banerjee said on Friday that there is a political motive for not allowing change of the state’s name to ‘Bangla’ and accused the Centre of ‘depriving’ the state.”We have been trying since 2003. So many years have gone by but till date it (name change) has not happened. I am amazed that in spite of giving all clarifications, Bengal is being deprived,” Banerjee said at the floor of the state Assembly. She maintained that she had already written a letter to Prime Minister Narendra Modi on the issue and with the permission of Speaker Biman Banerjee, laid down her letter before the House. “I have urged the Prime Minister to take necessary action including a constitutional amendment in the ongoing Parliament session,” Banerjee added. She further said that ‘Bengali’ is the fifth largest spoken language in the world. “Bengali language is our pride and all languages should be respected,” Banerjee reiterated. “I would request you to kindly accept the wishes of the people of West Bengal, as enshrined in the Resolution of the West Bengal Legislative Assembly and in the proposal of the West Bengal Cabinet, to rename our state as ‘Bangla’ in English, Hindi and Bengali. This re-christening will be in consonance with the history, culture and identity of our state and will reflect on the aspirations of our people,” the letter by Banerjee stated. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataIt was July 2018 when the state Assembly had passed a resolution unanimously to change the name of the state to ‘Bangla’ in the three most-spoken languages — Bengali, Hindi and English — and sent the proposal to the Union Home Ministry. It may be mentioned that Union minister of state for Home Nityanand Rai, in a written response to a question from MP Ritabrata Banerjee on Wednesday, had said that the Centre has not cleared the name ‘Bangla’ for West Bengal.