USB 3.0 socket Explore further Industry Leaders Proposed Superspeed USB 3.0 Specification The USB Promoter Group´s three-year effort to create a universal USB 3.0 culminated in the release of the specifications which is the technical road map for all developers to bring SuperSpeed USB technology to the marketplace. The Group invites developers to read the specifications and apply to become “Adopters” of the new technology. According to the USB Promoter Group, the new SuperSpeed USB 3.0 will deliver speed 10-times faster than current USB 2.0. In practice, the Group claims the USB 3.0 is backward compatible with existing USB 2.0 and will be capable of transferring a 25-GB HD movie in approximately 70-seconds. Current, USB 2.0 transfer rates for the same content will take nearly 14-minutes. Recognizing the public demand for high definition content, the SuperSpeed USB 3.0 discrete controller will be seen in the second half of 2009 and for other consumer products like external hard drives, flash drives and consumer products by 2010. Microsoft has been somewhat reluctant to say whether the new SuperSpeed USB will be incorporated into the new Windows 7 OS. It is considering adding it to its existing Windows Vista OS. Various tech experts caution that the newly released specifications and speed ratings are based on a maximum throughput in lab conditions. The actual performance for consumers will be significantly impacted by Internet infrastructure in their region. Symwave a global fabless semiconductor company provided a live demonstration of a USB 3.0 PHY device at the SuperSpeed USB Conference in San Jose. According to Yossi Cohen, President of Symwave, ” This is an amazing achievement for our engineering team and underscores our mixed-signal core competency. Symwave´s Quasar PHY is targeted at the fast-growing “sync- and- go” applications like mobile phones, media players, HD camcorders and external hard drives. The exceptional hurdle made in the final form of the SuperSpeed USB 3.0 is its apparent ability to utilize optical lines and wireless with some room for future and yet to be developed technology. The Adopters Agreement with a reciprocal royalty-free licensing arrangement for developer´s compliant products has a good chance of igniting a firestorm of new products. © 2008 PhysOrg.com 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: SuperSpeed USB 3.0 Finalized By Major Players in USB Promoter Group (2008, November 18) retrieved 18 August 2019 from https://phys.org/news/2008-11-superspeed-usb-major-players-group.html (PhysOrg.com) — The final specifications for the SuperSpeed USB 3.0 is available and a discussion of the technology is underway at the SuperSpeed USB Conference in San Jose, California. Major players in the development of the SuperSpeed USB 3.0 include, Hewlett-Packard, ST-NXP Wireless, Intel, Microsoft, Texas Instruments and NEC.
(PhysOrg.com) — While words such as “powerful” and “efficient” are often used to describe the potential of quantum computing, these quantum systems can be very fragile at the same time. Errors in quantum systems can easily arise due to decoherence – which occurs when a quantum state interacts with its environment – as well as unwanted noise or defective components. In order to protect quantum systems from these problems, physicists use quantum error correction (QEC) techniques to identify and correct errors without disturbing the system. A diagram of the proposed quantum memory with autonomous quantum error control (QEC). Image credit: Kerckhoff, et al. (c)2010 APS. In a recent study, physicists have developed a new QEC technique that can be directly embedded into quantum memories. Because the method is implemented “on-chip,” it requires no external clocking or logic. In addition, all control operations are performed autonomously by an embedded feedback loop, which is different than most previous QEC approaches. The researchers hope that the design could be useful for nanophotonics implementations and quantum-optical engineering.“Good QEC designs can improve implementation efficiency by reducing the hardware and computational ‘overhead’ that is needed in the implementation of the QEC for a particular quantum memory scheme,” coauthor Hendra Nurdin of Stanford University and the Australian National University told PhysOrg.com.In general, it’s much more difficult to design QEC methods than it is to design classical error correction methods because in classical methods, bits can simply be copied for redundancy. However, qubits cannot be copied in the same way due to the non-cloning theorem. Yet physicists can get around this limitation in a few ways, such as by encoding a single “logical” qubit (representing the information carried) in the entangled state of three “physical” qubits using a technique called the bit-flip code. The new autonomous QEC technique is based on the bit-flip code and another similar strategy called the phase-flip code, and can protect the stored information against independent unwanted flips to any, but not more than one, of the physical qubits. Whereas previous QEC approaches usually involved discrete restoration steps, the new approach involves a continuous syndrome readout to diagnose and correct errors. In this approach, each physical qubit is strongly coupled to its own optical cavity. If an error occurs so that one of the physical qubits has its state flipped, two feedback signals are sent to the qubit to flip it back and correct the error. The system is autonomous in that probe signals are continuously providing feedback to the qubits: less than two feedback signals in the case of no errors, and two feedback signals in the case of an error. “This QEC design has the potential to be embedded on the same hardware platform as the quantum memory, such as in nanophotonics, and has the potential for reduced hardware overhead requirements because it does not require external clocking and logic to operate, nor does not it require interfacing to measurement devices,” Nurdin said. “Moreover, since all processing is performed coherently, no classical computations are required to determine the corrective feedback signals.”Although the current design is just a proposal, the physicists explain that the circuitry could be realized with available technology, such as solid-state qubits coupled to electromagnetic resonators and waveguides. In the future, the scientists also plan to find ways to extend the design to QEC feedback networks that can correct a wider variety of qubit errors. 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: Autonomous quantum error correction technique proposed for quantum memories (2010, August 4) retrieved 18 August 2019 from https://phys.org/news/2010-08-autonomous-quantum-error-technique-memories.html First International Conference on Quantum Error Correction Copyright 2010 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. More information: Joseph Kerckhoff, et al. “Designing Quantum Memories with Embedded Control: Photonic Circuits for Autonomous Quantum Error Correction.” Physical Review Letters 105, 040502 (2010). Explore further
Image credit: swarmanoid.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: AI’s Emmy award goes to Swarmanoid robot book heist (2011, August 16) retrieved 18 August 2019 from https://phys.org/news/2011-08-ai-emmy-award-swarmanoid-robot.html (PhysOrg.com) — Robots removing a book off a shelf? Hardly what you would consider worthy of a video award. Not unless you’re talking about a special platoon of robots known as a swarmanoid. Their book heist actually won the “Oscars” of the Association for the Advancement of Artificial Intelligence (AAAI) Video Competition 2011 last week. Spy-thriller music, a Hitchcock-like hum of mosquitoes, and a menacing whir-sound of blades did nothing to deter excitement, but the technical construct and techniques of these little snap-in, snap-out robots are interesting even without special effects. A swarmanoid is a robot “swarm” made up of three characters: the eye-bots (they fly and stick to ceilings with magnets, loiter and send info to other robots) and hand-bots (they climb and manipulate objects) and foot-bots (wheeled robots capable of connecting to the other types as well as amongst themselves, moving in a horizontal roll). The three are like a fire brigade or any search and rescue mission team in that they have discrete tasking abilities but they can also connect when needed.The foot-bots are 17 cm diameter x 29 cm, 1.8 kg; the hand-bots are 38 x 44 x 30 cm; and the flying eye-bots are 50 cm in diameter, with an endurance of 10 to 20 minutes. © 2011 PhysOrg.com Toyota’s musical robots (w/ Video) Explore further The award-winning video shows how a swarmanoid teams up to identify a book, walks over to the shelf where the book is located, and then climbs the wall to get it, with each of the three characters doing its respective task.The eye-bot identifies the target book and the foot-bots are summoned. They roll over to the target area, and release the hand-bot, which climbs to the ceiling and gets the book.The “swarm” in “swarmanoid” helps explain the fundamental concept. Swarm robotics was inspired by social aspects of insect behavior. The film, and the robots, are the result of a research undertaking called the Swarmanoid Project, funded by the European Commission, with a stated objective of design, implementation and control of a novel distributed robotic system. Dr. Marco Dorigo is the developer of the project and its coordinator. He was awarded in November 2007 with the “CajAstur International Prize for Soft Computing.”According to the New Scientist, Dorigo and his colleagues have gathered an army of 30 foot-bots, 10 eye-bots and eight hand-bots. According to the Swarmanoid site, the Swarmanoid project started in 2006 and ended in September 30 2010. Nonetheless, the Swarmanoid team looks ahead toward future incarnations from the present groundwork. The film narration refers to future possibilities where swarmanoids could play a role in (1) replacing humans in dangerous situations (2) performing search-and-rescue missions and (3) interplanetary explorations.
Schematic of the experimental set-up, in which Alice can steer Bob, but not vice versa. Image credit: Händchen, et al. ©2012 Macmillan Publishers Limited 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 experimentally demonstrate one-way quantum steering (2012, September 17) retrieved 18 August 2019 from https://phys.org/news/2012-09-physicists-experimentally-one-way-quantum.html Journal information: Nature Photonics To demonstrate that the answer is yes, the physicists here entangled two laser beams that they prepared using an intricate system that involved mixing the beams with two vacuum modes. One output mode was sent to Alice and one to Bob. If the beams were prepared with the vacuum contribution in a certain intermediate range, the researchers observed that Alice could make a measurement on her side that influenced Bob’s measurements on his side – but Bob’s measurements did not influence Alice’s. In other words, they observed one-way steering.However, changing the vacuum contribution could change the results. The researchers found that, for a vacuum contribution smaller than 39%, two-way steering was allowed. And for a vacuum contribution greater than 70%, no steering was allowed. In between these values, only Alice could steer.”From the very beginning in 1935, EPR and Schrödinger focused on the question of whether a single subsystem (of an entangled state) can be described by a classical model, given some measurement results on the other subsystem,” coauthor Roman Schnabel of the University of Hannover and the Max Planck Institute for Gravitational Physics told Phys.org. “In our paper, we produce for the first time an entangled state that allows for a purely classical description of one subsystem but not of the other. Our result supports the relevance of the original question by EPR and Schrödinger since we demonstrate that the answer is more diverse than one might expect.”As he explained further, the results also provide insight into the extent to which quantum mechanics differs from classical mechanics, one of the fundamental questions in physics.”Our experiment pinpoints the effect of decoherence,” he said. “Our state is produced by discarding information from one subsystem (due to the extra vacuum contribution). The one-sided information loss results in the new situation that this subsystem can be described by a classical model whereas the other subsystem still requires a quantum model. There is a long debate on how the transition from a distinct (entangled) quantum system to a system that can be described by a classical model actually happens. Our experiment is thus a nice model system that shows how decoherence produces the transition from the quantum to the classical world.”The researchers expect that the experiment can be extended to a tripartite situation involving a third party, Charlie. In the current experiment, one output mode of the light beam was dumped, but if it had been sent to Charlie, the researchers predict that Alice could also steer Charlie simultaneously to steering Bob. Neither Bob nor Charlie could steer anyone.As the physicists explain, one-way steering is yet another counterintuitive effect of quantum mechanics. They explain that one-way steering leads to the peculiar situation in which two experimenters performing measurements on the same shared state reach different conclusions. Future research into this implication and others could have applications in areas such as quantum key distribution for secure communication and information science in general. One-way steering occurs when the second vacuum mode used to generate the steering states is between 39% and 70% (white region). When the value for one steering direction is less than 1.0 (red histogram) and the value for the other steering direction is above 1.0 (blue histogram), one-way steering occurs. Image credit: Händchen, et al. ©2012 Macmillan Publishers Limited Explore further Quantum physics mimics spooky action into the past Copyright 2012 Phys.org 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. Because of the two different roles, physicists have wondered about the possibility of one-way steering. That is, are there any physical states that Alice could send that allow her to steer Bob, but not vice versa? (Phys.org)—When Einstein described the interaction between two distant objects as “spooky interaction at a distance,” he was referring to the quantum phenomenon called steering. Steering can occur in strongly entangled systems and implies a direction between the two parties involved, while entanglement without steering generally has no direction. In 1992, physicists experimentally demonstrated steering in both directions – that is, both parties could steer each other. Now for the first time, physicists have demonstrated steering in one direction only, a feat that gives new insight into the quantum world and that could have applications in quantum information. More information: Vitus Händchen, et al. “Observation of one-way Einstein-Podolsky-Rosen steering.” Nature Photonics. DOI: 10.1038/NPHOTON.2012.202 The physicists, from the University of Hannover’s Center for Quantum Engineering and Space-Time Research-QUEST, the Max Planck Institute for Gravitational Physics (Albert Einstein Institute), and the Institute for Theoretical Physics, all in Hannover, Germany, have published their study in a recent issue of Nature Photonics.As the scientists explain, steering forms the core of the famous Einstein-Podolosky-Rosen (EPR) argument put forth in 1935. As an attempt to criticize quantum mechanics, the three scientists theoretically pointed out an odd effect of two strongly correlated particles: measuring a quantity (such as the position or the momentum) of particle A will cause the related quantity of particle B to become certain, even though the Heisenberg Uncertainty Relation predicts a minimum quantum uncertainty for individual systems. This odd effect exists even if the particles do not come in contact with each other. To explain this finding, Einstein, Podolosky, and Rosen assumed that the outcome of all possible measurements must be encoded in both particles as a hidden parameter, and that quantum mechanics is incomplete because it does not account for this parameter. Otherwise, the instantaneous interaction would conflict with the theory of relativity.However, other physicists of the day saw that the interaction was actually a new quantum phenomenon. Erwin Schrödinger was the first to call the effect “entanglement” as well as describe its stronger form, steering. In steering, the two parties (Alice and Bob) have certain roles that are not interchangeable. Specifically, Alice has the role of choosing an observable to be measured, which somehow changes the states in Bob’s system. If Bob chooses the observable to be measured, then the roles would change, and he would be the one steering Alice.
NGC 288 as seen by Hubble Space Telescope’s Wide Field Channel of the Advanced Camera for Surveys. Credit: ESA/Hubble & NASA More information: On the extended stellar structure around NGC 288, arXiv:1709.07284 [astro-ph.GA] arxiv.org/abs/1709.07284AbstractWe report on observational evidence of an extra-tidal clumpy structure around NGC 288 from an homogeneous coverage of a large area with the Pan-STARRS PS1 database. The extra-tidal star population has been disentangled from that of the Milky Way field by using a cleaning technique that successfully reproduced the stellar density, luminosity function and colour distributions of MW field stars. We have produced the cluster stellar density radial profile and a stellar density map from independent approaches, from which we found results in excellent agreement : the feature extends up to 3.5 times the cluster tidal radius. Previous works based on shallower photometric data sets have speculated on the existence of several long tidal tails, similar to that found in Pal 5. The present outcome shows that NGC 288 could hardly have such tails, but favours the notion that interactions with the MW tidal field has been a relatively inefficient process for stripping stars off the cluster. These results point to the need of a renewed overall study of the external regions of Galactic globular clusters (GGCs) in order to reliably characterise them. Hence, it will be possible to investigate whether there is any connection between detected tidal tails, extra-tidal stellar populations, extent diffuse halo-like structures with the GGCs’ dynamical histories in the Galaxy. NGC 288 is a globular cluster located some 28,700 light years away from the Earth in the constellation Sculptor. With an estimated age of about 10.6 billion years, this cluster belongs to low-concentration globulars, with its stars more loosely bound together. It has a large, dense core surrounded by a much more diffuse and irregular ring.Some globular clusters in the Milky Way are surrounded by extended stellar structures. Previous observations of NGC 288 have suggested that this cluster exhibits tidal tails that could be extending up to about 1,100 light years from its center. One study reported that the cluster has two main tidal tails, one running from the cluster centre towards the southeast and another one towards the galactic center. Other research speculated on the existence of a long tidal tail from the cluster center towards the north-west beside its counterpart tail to the south-east.Now, Piatti’s team has studied the extended stellar structure around NGC 288 by analyzing the data from the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS). The astrometric and photometric catalogue produced by Pan-STARRS allowed the researchers to learn more about the cluster’s external region.”We report on observational evidence of an extra-tidal clumpy structure around NGC 288 from an homogeneous coverage of a large area with the Pan-STARRS PS1 database,” the astronomers wrote in the paper.According to the paper, NGC 288 has not two or more but only a single extra-tidal clumpy structure, as commonly seen in other globular clusters in the Milky Way. This structure reaches approximately 3.5 times the cluster’s tidal radius. The researchers also emphasized that NGC 288 is not a tidally limited galactic globular cluster and its main sequence stars located in the outermost regions are in some way experiencing gravitational effects due to the potential of the Milky Way.When compared to other galactic globular clusters, NGC 288’s tidal tail is a moderate extended structure. The astronomers noted that other globular clusters in the Milky Way show evidence of such features up to nearly more than six times their tidal radii.The results of the new research, which debunked the hypothesis of several long tidal tails around NGC 288, show that external regions of galactic globular clusters should be further studied. “These results point to the need of a renewed overall study of the external regions of galactic globular clusters (GGCs) in order to reliably characterise them. Hence, it will be possible to investigate whether there is any connection between detected tidal tails, extra-tidal stellar populations, extent diffuse halo-like structures with the GGCs’ dynamical histories in the galaxy,” the researchers concluded. (Phys.org)—A team of astronomers led by Andrés E. Piatti of the Astronomical Observatory of Córdoba in Argentina has recently observed an extra-tidal clumpy structure around the globular cluster NGC 288. The results of these observations, available in a paper published Sept. 21 on arXiv.org, could redefine our understanding of external regions of globular clusters in our Milky Way galaxy. © 2017 Phys.org Explore further Citation: Astronomers study the extended stellar structure around the globular cluster NGC 288 (2017, September 26) retrieved 18 August 2019 from https://phys.org/news/2017-09-astronomers-stellar-globular-cluster-ngc.html Tidal tails detected around a distant globular cluster 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.
To honour and celebrate the 65th anniversary of diplomatic relations between Russia and India, the Embassy of the Russian Federation, in association with the State Russian Museum (St. Petersburg), the Institute of Oriental Studies, Russian Academy of Sciences (Moscow) and the Russian Centre for Science and Culture (New Delhi) with the sponsorship from Sistema JSFC and MTS India have come together to showcase an exquisite piece of history.This is in the form of an art exhibition and an exclusive book launch which is translated for the first time in English called ‘Letters from India’ by Prince Alexei Saltykov specifically for the Indian audiences. Also Read – ‘Playing Jojo was emotionally exhausting’In this month-long unique art exhibition that will commence on 29 October, 2012 there will be 23 historic art works that depict the life and people of mid 19th century India told through the eyes of Prince Alexei Saltykov who visited India between the periods of 1841-43 and 1845-46. A talented painter, Prince Saltykov, using water colour and pencil, made images that depicts Indian realities, which he treated with utmost affection and adoration. Prince Alexey Saltykov’s travelogue ‘Letters from India’ first published in French in 1848 aroused great interest amongst readers and was reprinted several times. Only 1,000 copies have been printed to mark the legacy of Prince Alexei Saltykov and the 65th anniversary of the two countries. Also Read – Leslie doing new comedy special with NetflixThe letters of the Russian traveller attracted readers with an abundance of information which could rarely be found in literature of this kind. Courage and a desire for learning enabled Saltykov to penetrate those corners of India where Europeans had rarely set foot. He was amongst the first Russian travellers who visited remote areas of Western Himalayas leaving behind priceless images of people inhabiting the picturesque landscapes.The Russian artist visited India in search of beauty and found it in the Indian landscape, the temples and palaces, processions and festivals and above all in its people. The exhibition will be inaugurated by Dr Karan Singh, President of the Indian Council for Cultural Relations and HE Alexander Kadakin, Ambassor of the Russian Federation to India on Monday, 29 October.
By spending an hour in the dark, hotels like Le Meridien joined millions around the world to send a powerful message about a brighter future for the planet.23 March saw the hotel turn off its lights, all except the ones needed for basic amenities (by turning off exterior signage lighting; dimming or turning off non-essential interior lighting; using candlelight in appropriate public areas such as restaurants and bars) to celebrate Earth Hour. For those who don’t know about this world-wide initiative, here is a little crash course! Also Read – ‘Playing Jojo was emotionally exhausting’Earth Hour is a worldwide event organized by the World Wide Fund for Nature (WWF) and held towards the end of March annually, encouraging households and businesses to turn off their non-essential lights for one hour to raise awareness about the need to take action on climate change. The event first took place in 2007, when 2.2 million residents of Sydney participated by turning off all non-essential lights. Following Sydney’s lead, many other cities around the world adopted the event in 2008. Also Read – Leslie doing new comedy special with NetflixEarth Hour 2013 was being held on 23 March from 8:30 pm To 9:30 pm during participants’ local time.Guests of the hotel and others who gathered to mark the event were encouraged to support the cause by lighting candles in the hotel’s lawns to form the well recognized Earth Hour logo ‘60+ Earth Hour’.’A lot of hotels across the country are doing things for Earth Hour,’ says Meena Bhatia, Vice President, Operations and Marketing, Le Meridien. ‘We chose to light candles on the hotel lawns,’ she explains. Guests were requested with letters to switch off lights for an hour and to join others to mark the 60 minutes. With the kind of response the initiative garnered, clearly they were more than happy to be a part of it.While the flickering candles created a magical atmosphere, it also marked out the gravity of the need to conserve energy across the planet. As granted as we take regular energy sources such as water, electricity and even solar power, Earth Hour is a stark reminder that unless we learn to use resources wisely, a day might come when nothing remains.We switched off for Earth Hour…hope you did too!
A sophisticated, stylised and lyrical opera, The Peony Pavilion meant for the connoisseurs rated as one of China’s best-loved classical operas was staged at the Capital’s Sirifort auditorium on December 12. The legendary play has been brought to India by Swati Bhise, artistic director of BraviaSadir Theatre Festival Production who is an acclaimed Bharatnatyam dancer and choreographer. Her aim is to promote art and culture between the two neighboring countries and develop friendly relations between the two nations. Also Read – ‘Playing Jojo was emotionally exhausting’The peony love attracted an audience which included corporate honchos, bureaucrats, distinguished members of Delhi society and young students from art and cultural institutions in Delhi. Swati Bhise, said, “Art is the finest way to bridge the cultural gap between two great powers. Theatre and Art give us a deep understanding of the existing political, social and economic conditions of a country. It also gives an insight into the thought process of an entire ethnic group. This is a perfect platform to go global and continue our own personal growth and get better understanding of different cultures. I am happy that it was so well received in Mumbai and Delhi. The audience is evolved and understands sophisticated art forms such as Opera”. Also Read – Leslie doing new comedy special with NetflixThe Peony Pavilion showcased a complicated love story which was set in the last days of the Southern Song Dynasty, which lasted from 1127 to 1279 AD. It is hailed as the “mother” of a hundred opera forms. In its original form, the play, traditionally performed as a Kunqu opera, which is one of the oldest styles of Chinese theatre, runs for 20 hours and has 55 scenes, has been brought down to a 90-minute performance of key scenes without compromising on its essence. The play was staged by 18 performers, all from mainland China. It was translated by Joanna Lee, an American-Chinese who has spent a lifetime on operas.
KOLKATA: Three Trinamool workers were critically injured when they were attacked allegedly by some BJP workers at Maynaguri in Jalpaiguri on Sunday night. All three are undergoing treatment at a state-run hospital in Jalpaiguri and condition of one is stated to be critical. Locals alleged that the TMC workers were attacked when they had assembled at a place to hold a meeting. It has also alleged that the BJP workers were carrying swords and iron rods. All of a sudden, they rushed to the spot where the TMC workers had assembled and started beating them up. Police went to the spot after receiving the news. They brought the situation under control and took the injured persons to the hospital. TMC leaders in the area alleged that their workers were attacked as BJP is trying to create tensions in the area. However, local BJP leaders have refuted the allegations and claimed that they were not involved in the incident.