Progress in quantum computing

first_imgEngineers and physicists at Harvard have managed to capture light in tiny diamond pillars embedded in silver, releasing a stream of single photons at a controllable rate.The advance represents a milestone on the road to quantum networks in which information can be encoded in spins of electrons and carried through a network via light, one photon at a time.The finding was published in Nature Photonics and appeared online on Oct. 9.“We can make the emission of photons faster, which will allow us to do more processing per second — for example, more computations — in the future quantum network,” explains principal investigator Marko Lončar, associate professor of electrical engineering at the Harvard School of Engineering and Applied Sciences (SEAS).The device Lončar’s research team has built consists of parallel rows of tiny, nanofabricated diamond posts, embedded in a layer of silver, each of which can act as a single photon source.By removing the silver wrapping from the nanostructures, the team was also able to achieve a slower release of photons, which is of interest for probing the dynamics of the quantum system.The breakthrough takes advantage of imperfections in the diamond’s crystal lattice, where carbon atoms are replaced by other elements. To the naked eye, these imperfections can appear as discolorations in the diamond, turning it yellow in the case of nitrogen. Occasionally, there is also a vacancy (missing carbon atom) next to the nitrogen atom.Each nitrogen-vacancy imperfection can serve as a nearly perfect quantum emitter, capable of emitting red photons one by one, even at room temperature. The technology is a promising candidate for realization of scalable, on-chip quantum networks.“The color centers in diamond are very interesting as qubits for quantum information processing, where they can be used as memory to store information,” says Lončar. “More importantly, they can be interrogated — they can be written into and read out — with light.”Lončar’s team fabricates diamond posts that contain negatively charged nitrogen vacancy centers, which can absorb light and hold its energy for a given amount of time, finally releasing it in the form of photons.“The rate at which photons are emitted can be controlled by carefully nanoengineering the center’s surrounding,” says co-author Irfan Bulu, a research associate in the Lončar group. Attaining fine control of that release, however, has been difficult.“One of the main challenges has been the efficiency with which you can write information into the spin of these color centers, as well as the efficiency with which you can collect photons emitted from the color centers,” explains co-author Jennifer Choy, a graduate student in Lončar’s lab at SEAS. “The other challenge has been the rate — how quickly you can perform these processes.”Previous work from Lončar’s group solved the collection efficiency problem by using diamond nanowires to channel and direct the flow of photons. The new research manipulates the radius of diamond pillars and adds the silver coating. The diamond-silver construction acts as an optical nanoresonator, creating a strong electromagnetic field around the emitter and offering a new level of control over the rate of emission.Moreover, the device functions at room temperature — an essential requirement for practical computing applications — and the nanostructured chips are fully scalable.“We’ve designed everything in parallel in a massive system, which allows us to make thousands or millions of devices with more or less the same properties, and we use conventional microfabrication and nanofabrication techniques, unlike what has been done in this field before,” says Birgit Hausmann, a graduate student in Lončar’s lab at SEAS and one of the co-authors.Co-authors included Tom Babinec, a graduate student at SEAS; Mughees Khan, a staff scientist at the Wyss Institute for Biologically Inspired Engineering at Harvard; Patrick Maletinsky, a fellow of the Department of Physics at Harvard; and Amir Yacoby, professor of physics in the Harvard Faculty of Arts and Sciences.The work was supported by grants and fellowships from the U.S. Department of Defense; the Defense Advanced Research Projects Agency (DARPA) QuEST program; the National Science Foundation (NSF); the King Abdullah University of Science and Technology (KAUST); the Sloan Foundation; and the NSF-supported Nanoscale Science and Engineering Center (NSEC) at Harvard. Fabrication took place at the NSF-supported Center for Nanoscale Systems (CNS) at Harvard.last_img read more

Mining in the time of drones

first_imgThis article was originally published at Australian Mining.As a former analyst at technology firm IDC, I’ve been following the technology industry for the best part of two decades now.But only recently have we begun to really feel the force of technology and digital disruption at large. This is also true of the mining industry, which is on the cusp of being transformed by technology; by things like clouds, robots and drones.As with any technology, there are opportunities and pitfalls, and in this piece I would like to look at how with the right approach, mining companies can maximise the opportunities available.Firstly we need to look at the current state of IT in mining, and where it’s currently heading. Then we can investigate how new technologies and trends will impact mining, and finally what organisations’ can do to prepare.IDC recently conducted technology research into the Australian mining sector, which showed our mining companies are truly world class, with a quarter actively investigating robots and 80 per cent automating operations.Furthermore, 36 per cent of mining companies do expect to see IT budgets increase, which is at odds with other sectors where we see flat IT spending for the foreseeable future.However, what emerged as the biggest challenge facing mining companies is the problem of bridging mining operations and corporate IT.Connecting these forces together is essential to creating a seamless, efficient and profitable mining organisation. While this problem has been evident for some time, there’s real progress being made on tackling the issue.The challenge of linking the business with technology is not exclusive to the mining sector, with the subject being of critical importance to the economy in general. In my experience one of the best ways to initiate the linking process is through the establishment of “tiger teams” that are dedicated to the unified application of technology. This is reflected by an IDC prediction that states by 2016, 50% of large mining companies will set up a cross-functional IT operations/LOB (Line of Business) team to focus on third platform technology. IDC describes the third platform as IT for growth and innovation; built on mobile devices, cloud services, social technologies, and big data. Put more simply, in the mining sector, this third platform framework translates to a dynamic elastic technological fabric that stretches across the empire of the mine with both centralised and de-centralised processing occurring at scale. The outcome is about connecting supply and demand; much like Uber, AirBnB and other new services available in the shared economy.Indeed, one of things we’re starting to see across the mining industry is similar process innovation, where a combination of IT and operations teams coming together with an armory of new technology (social, mobile, analytics and Cloud) combined with robotics and automation to look across the organisation and investigate how these technologies can be implemented, and processes significantly improved.I have had the benefit of observing these teams for many years and noticed that the most successful teams all exhibited key characteristics. One such characteristic was the cross-pollination of ideas through the adoption of best practices from other industries. In the case of mining I would recommend looking to high tech manufacturing, the adjacent industry of Oil & Gas, and also the Australian Banking sector. Successful teams were also canny in the projects they took on, electing to demonstrate value through rapid ROI attainment, rather than more cumbersome long term projects. Importantly, successful teams were brilliant communicators, striking a balance between establishing a technology vision while maintaining realistic expectations.The hope is that in the mining company of the future, we will look back at issues of productivity and efficiency as vestiges of a time gone by. In the mine of the future, technology will have enabled us to be all seeing and predictive. With the correct use of technology, many of the constraints that have defined the industry will be obsolete.This transformation will not come from merely introducing some technical curiosities, but rather through the seamless interconnection of a web of input and output sensors. The workforce will utilise simulated and augmented reality technology in a wearable format like we currently see with virtual reality company, Oculus Rift. This will culminate in a world where no resource is hidden from sight and extraction can occur in a way that closely links your supply with the demand.When the internet of things hits its stride, there will be an army of sensors providing a variety of information feeds such as text, video and machine information that produces a tsunami of data, and rather than being overwhelming, this data stream will be very positive for mining. There’s a really strong hand in glove relationship between the internet of things, and analytics. This is because of what we do with the outputs from the IOT requires that we derive insights.Mining companies need to ready themselves for the onslaught of data. Without the right backend tools to deal with the IOT, organisations risk not being able to capitalise on their wealth of data to extract valuable insights that could further their businesses.Converged infrastructure is a logical option for organisations that want to take data analytics to the next level. For example, VCE’s Vxblock systems, the world’s most advanced converged infrastructure, provides a standardized big data and analytic infrastructure to scale across multiple business units while embracing existing applications and systems.IOT applications also have very different requirements compared to the usual business applications. IOT apps generate vast data in moments and traditional IT infrastructure isn’t tuned to the task at hand. Converged infrastructure can provide the massive scale and performance needed to work in the third platform era.To truly capitalise on all that’s ahead, mining companies must take the following steps:Establish a digital vision for the role of IT in your mineArchitect a framework to support the needs of tomorrow, not just today, leaving room for the unknownPrepare for an IT arms raceImage: “Washed iron ore is loaded into trucks from M2500”, by Peter Craven.last_img read more

Tampa’s mayor issues outdoor mask order for Super Bowl

first_imgTAMPA, Fla. (AP) — Anyone visiting Tampa’s popular outdoor destinations for the Super Bowl will be required to wear a mask to help prevent the spread of the coronavirus. Tampa Mayor Jane Castor signed an executive order Wednesday saying masks must be worn outside while downtown, in neighborhoods around Raymond James Stadium — where the Super Bowl will be held — and in other tourist hotspots. The order says those who aren’t wearing a mask can be cited with a “nominal civil infraction” that carries a penalty up to a $500 fine. It will remain in place until Feb. 13 — nearly a week after the Super Bowl ends. There are a few exceptions, including children under 5.last_img

Aggregation gives smaller companies access to solar, wind power

first_img FacebookTwitterLinkedInEmailPrint分享Bloomberg:Companies don’t have to be as big as Walmart Inc. or Facebook Inc. to buy solar or wind power anymore.Businesses with more modest appetites for electricity — including Swiss Re AG, Nestle SA and others — are increasingly banding together to line up deals for clean power, broadening a market long dominated by tech giants, according to a report Thursday by Bloomberg NEF.The strategy is enabling more companies to buy wind and solar power at prices similar to those paid by some of the biggest corporate users of renewable energy. It’s also boosting demand for renewables as concerns about climate change grow. Companies in the U.S. have already agreed to buy 5.9 gigawatts of clean power this year, more than double the total from 2017. “It opens the door for so many companies that wouldn’t have bought clean energy otherwise,” said Kyle Harrison, a New York-based analyst at BNEF.Until recently, three-quarters of corporate power-purchase agreement volumes came from the top 20 buyers, he said. But that’s changing. About 40 percent of the ones signed this year have been though aggregated deals, up from 11 percent in 2015. Buyers have included National Geographic and Etsy, according to the BNEF report.The aggregated deals provide advantages to wind and solar developers, including enabling them to build larger projects and take advantage of economies of scale, BNEF said. On the downside, juggling a large cast of buyers with varying credit histories can pose challenges.More: It’s not just Facebook and Google buying clean power anymore Aggregation gives smaller companies access to solar, wind powerlast_img read more

East Setauket Man’s Killer Sentenced to 22 Years in Prison

first_imgSign up for our COVID-19 newsletter to stay up-to-date on the latest coronavirus news throughout New York A Utah man who unloaded a barrage of bullets into a well-regarded horse riding instructor’s East Setauket home two summers ago was sentenced Tuesday at Suffolk County court to 22 years in prison for the man’s murder.Brett Knight, who sparked a nationwide manhunt following the shocking slaying, had pleaded guilty in December to second-degree murder and second-degree attempted murder, among other charges.Prosecutors said Knight, a 47-year-old ex-American Express executive, acted out of a feeling of betrayal and belief that the victim, 50-year-old Ross Reisner, betrayed him amid a legal dispute.Knight, according to prosecutors, hid in the bushes near Reisner’s home on Sept. 24, 2013 and fired 11 rounds through the kitchen window, striking and killing Reisner. Another man, identified in published reports as Resiner’s boyfriend, was injured in the shooting, prosecutors said.Knight fled the state after the murder, but was eventually apprehended by federal authorities who tracked him down in Tennessee. After his arrest, he told Suffolk County police homicide detectives that he felt Reisner and his boyfriend “betrayed him” and destroyed his life, prosecutors said.Knight had met the pair in the early ’90s and moved in with them after he was fired by American Express, prosecutors said. Their relationship soured after Knight accused the two of interfering in his wrongful termination lawsuit against American Express, which was settled out of court. He was eventually evicted from his basement apartment after he assaulted Resiner’s boyfriend in 2010, prosecutors said.Knight also pleaded guilty to criminal possession of a weapon and three counts of aggravated harassment.last_img read more

Bhutan to gradually lift coronavirus lockdown

first_imgBhutan, the remote Himalayan kingdom famous for measuring gross national happiness, on Tuesday took the first steps to lift its coronavirus lockdown, saying there was limited community transmission.The country of 750,000 people between India and China — one of the few nations in the world that have yet to register a virus death — has so far recorded 225 infections.”Experiences in many countries reveal a surge in Covid-19 cases, mostly detected in the second week of post-lockdown,” Prime Minister Lotay Tshering, a doctor who continues to practice on weekends, said in a television address late Monday. “Which is why our re-opening strategies should be gradual.”The shutdown was first imposed in early August after a Bhutanese woman tested positive after interacting extensively within the community. She had earlier tested negative.The health ministry said the lockdown was being gradually lifted as there had been an uptick in cases in recent days but no widespread community outbreak.It added that most new cases were from confined clusters or quarantine facilities where Bhutanese returning from overseas have to stay for 24 days. Under the new guidelines, people will be allowed to leave their homes for non-essential activities like walking from Tuesday to Thursday.In the following three days, public transport would resume. Private travel would be allowed after that.If there is no major outbreak, the government would further relax other restrictions.International flights to the isolated nation remain suspended.center_img Topics :last_img read more

Governor Wolf Sets Special Election for Pennsylvania’s 18th Congressional District

first_imgGovernor Wolf Sets Special Election for Pennsylvania’s 18th Congressional District SHARE Email Facebook Twitter October 23, 2017center_img Press Release,  Voting & Elections Harrisburg, PA – Governor Wolf today issued a Writ of Election setting a date of March 13, 2018 for a special election to fill Pennsylvania’s vacant 18th Congressional District:TO THE SECRETARY OF THE COMMONWEALTH, THE COUNTY BOARDS OF ELECTION OF THE COUNTIES OF ALLEGHENY, GREENE, WASHINGTON AND WESTMORELAND, GREETINGS: WHEREAS, in consequence of the October 21, 2017 resignation of the Honorable Tim Murphy, who was elected a Member of the One Hundred Fifteenth Congress of the United States for the Eighteenth Congressional District of the Commonwealth of Pennsylvania, as said district is established by law, a vacancy exists in the representation of the Commonwealth in the House of Representatives of the Congress of the United States: NOW, THEREFORE, I, Tom Wolf, Governor of the Commonwealth of Pennsylvania, in pursuance of the provisions of the Constitutionof the United States and of Section 627 of the Act of the June 3, 1937 (P.L. 1333, No. 320), as amended, 25 P.S. § 2777, do issue this Writ of Election commanding you to do your respective duties according to law and to hold a special election in the said Eighteenth Congressional District of the Commonwealth of Pennsylvania onTUESDAY, MARCH 13, 2018for the election of a Representative in the House of Representatives of the Congress of the United States to fill the vacancy aforesaid.  And you are hereby required and enjoined to give lawful notice of the cause and conduct of said special election, and make return thereof in the manner and form as by law directed and required.GIVEN under my hand and the Great Seal of the State, at the City of Harrisburg, this twenty-third day of October in the year of our Lord, two thousand and seventeen, and of our Commonwealth the two hundred and forty-second.last_img read more

Mayweather rules out 2020 fight after two  tragic family deaths

first_img Promoted ContentCouples Who Celebrated Their Union In A Unique, Unforgettable Way7 Ways To Understand Your Girlfriend Better5 Of The World’s Most Unique Theme ParksThe Very Last Bitcoin Will Be Mined Around 2140. Read More8 Superfoods For Growing Hair Back And Stimulating Its Growth7 Thailand’s Most Exquisite Architectural WondersPortuguese Street Artist Creates Hyper-Realistic 3D Graffiti7 Ways To Understand Your Girlfriend BetterYou’ve Only Seen Such Colorful Hairdos In A Handful Of AnimeTop Tastiest Foods From All Over The World7 Black Hole Facts That Will Change Your View Of The Universe10 Most Praised Historical Movies Floyd Mayweather’s return to the ring looks unlikely after the star was overwhelmed by two crushing losses in his family. Mayweather’s ex-girlfriend Josie Harris, who is the mother of his three children, was found dead in her car last week, while his uncle Roger who trained his nephew for 12 years passed away at the age of 58 on Wednesday. The undefeated fighter had been teasing a comeback after last facing Conor McGregor in a mega fight in 2017, with rumours that he could be set to clash against the Irishman again this year. Another huge rematch against Manny Pacquiao had also been mooted, but TMZ report that Mayweather will put those ambitions on the backburner as he comes to terms with his grief. Harris was found dead outside her home in Valencia, Los Angeles County, on March 10, with the pair sharing a tense relationship after dating between 1995 and 2010. At the end of their time together Mayweather was convicted of domestic violence against her and served two months in prison.Advertisement ‘I was a battered woman,’ Harris said in 2014. ‘I felt embarrassed about saying I was a battered woman. I felt shame. I felt like it was my fault. What did I do? I didn’t understand what a battered woman was at that time. But Mayweather, who has never lost in 50 fights, claimed in 2015 that the violence was merely him trying to restrain Harris because she was on drugs – an accusation Harris denied. A second money-spinning fight against Manny Pacquaio will also have to be put to one side In the wake of her death he posted a series of pictures of himself with her on Instagram, including one with the caption ‘my baby’. Read Also Tyson pockets £20k in 6 hours charging fans £250 per video messages His second loss in as many weeks was also devastating as he mourned for his uncle Roger, who played a huge role in his career. He was in his corner for 34 of his fights to help him remain unbeaten and conquer the divisions. ‘My uncle was one of the most important people in my life inside and outside of the ring,’ Mayweather Jr said after his death. FacebookTwitterWhatsAppEmail分享 center_img Loading… last_img read more

$5 wristband admission Saturday at Bethany

first_imgBy Rick StaleyBETHANY, Mo, – Bethany Speedway is the place to be this Saturday, June 30 for Toot Toot Family Restaurant and Lounge Night at the Races.A grandstand wristband from US 36 Raceway the night before gets fans grandstand admission at Bethany for only $5.Divisions in action include the IMCA Modifieds, IMCA Sunoco Stock Cars and Karl Chevrolet Northern SportMods.Intermission sees a watermelon eating contest for kids and kids at heart with prizes given throughout the crowd.The green flag drops at 8 p.m.last_img

Europa League: Man U unleash Ighalo on Club Brugge

first_imgRelatedPosts Ighalo: My best moment as ‘Red Devil’ EPL: Crystal Palace stun sloppy Man U EPL: Red Devils attack Palace Manchester United boss Ole Gunnar Solskjaer has named his team to take on Club Brugge at Old Trafford. The round-of-32 tie is delicately balanced after a 1-1 draw in Belgium, but Anthony Martial has given the Reds an away goal. However, the Frenchman is not in the squad for the game, with Odion Ighalo instead lining up as centre-forward, to make his first start for the club since arriving on deadline day. The 30-year-old is one of seven changes to manager Solskjaer’s side from the first leg. Scott McTominay is in the XI for the first time since injuring his knee in the Boxing Day victory against Newcastle United, while Eric Bailly is drafted in to partner skipper Harry Maguire in defence. Ruud Vormer, Eder Balanta and Emmanuel Dennis miss out for the visitors.Tags: ANthony MartialClub BruggeManchester UnitedOdion IghaloOle Gunnar Solskjaerlast_img read more