Share Share via TwitterShare via FacebookShare via LinkedInShare via E-mail Published: Feb. 3, 2011 Intersecting laser beams create “optical tubes” to pack atoms close together, enhancing their interaction and the performance of JILA’s strontium atomic clock. Image by Richard B. Baxley/JILA Categories:AcademicsScience & TechnologySpaceCampus CommunityNews Headlines NIST news releaseIn a paradox typical of the quantum world, JILA scientists have eliminated collisions between atoms in an atomic clock by packing the atoms closer together. The surprising discovery, described in the Feb. 3 issue of Science Express, can boost the performance of experimental atomic clocks made of thousands or tens of thousands of neutral atoms trapped by intersecting laser beamsJILA is jointly operated by the National Institute of Standards and Technology (NIST) and the University of Colorado Boulder.JILA scientists demonstrated the new approach using their experimental clock made of about 4,000 strontium atoms. Instead of loading the atoms into a stack of pancake-shaped optical traps as in their previous work, scientists packed the atoms into thousands of horizontal optical tubes. The result was a more than tenfold improvement in clock performance because the atoms interacted so strongly that, against all odds, they stopped hitting each other. The atoms, which normally like to hang out separately and relaxed, get so perturbed from being forced close together that the ensemble is effectively frozen in place.”The atoms used to have the whole dance floor to move around on and now they are confined in alleys, so the interaction energy goes way up,” says NIST/JILA Fellow Jun Ye, leader of the experimental team. Ye also is an adjoint professor of physics at CU-Boulder.How exactly does high interaction energythe degree to which an atom’s behavior is modified by the presence of othersprevent collisions? The results make full sense in the quantum world. Strontium atoms are a class of particles known as fermions. If they are in identical energy states, they cannot occupy the same place at the same timethat is, they cannot collide. Normally the laser beam used to operate the clock interacts with the atoms unevenly, leaving the atoms dissimilar enough to collide. But the interaction energy of atoms packed in optical tubes is now higher than any energy shifts that might be caused by the laser, preventing the atoms from differentiating enough to collide.The idea was proposed by JILA theorist Ana Maria Rey and demonstrated in the lab by Ye’s group. Other co-authors of the study were Matthew D. Swallows, Michael Bishof, Yige Lin, Sebastian Blatt and Michael J. Martin.Given the new knowledge, Ye believes his clock and others based on neutral atoms will become competitive in terms of accuracy with world-leading experimental clocks based on single ions (electrically charged atoms). The JILA strontium clock is currently the best performing experimental clock based on neutral atoms and, along with several NIST ion and neutral atom clocks, a possible candidate for a future international time standard. The devices provide highly accurate time by measuring oscillations (which serve as “ticks”) between the energy levels in the atoms.In addition to preventing collisions, the finding also means that the more atoms in the clock, the better. “As atom numbers increase, both measurement precision and accuracy increase accordingly,” Ye says.To trap the atoms in optical tubes, scientists first use blue and red lasers to cool strontium atoms to about 2 microKelvin in a trap that uses light and magnetic fields. A vertical lattice of light waves is created using an infrared laser beam that spans and traps the atom cloud. Then a horizontal infrared laser beam is turned on, creating optical tube traps at the intersection with the vertical laser.The research was supported by the Defense Advanced Research Projects Agency (grant administered by the Army Research Office), NIST, National Science Foundation and the Air Force Office for Scientific Research.
ReddIt Pinterest Linkedin Facebook Subscribe to the Afternoon BriefAdvertisement Subscribe to the Afternoon Brief Email Home Afternoon Brief Afternoon Brief, February 1Afternoon BriefVideoAfternoon Brief, February 1By Editor – February 1, 2016 9 0 Share Trending Story:Details of Sonoma County’s Super Bowl Pledge ShroudedThe Press Democrat could not ascertain exactly how much three Sonoma County groups are spending on their Super Bowl promotional effort and other details of the initiative after being denied a request for a copy of their contract with the Super Bowl 50 Host Committee…Today’s News:Can ‘Frankengrapes’ Save California Wine?The drought gets a lot of attention, but theres a greater threat looming over Californias grapevines…Napa Wineries Ship $1 Billion in Wine to Consumers in 2015To remain competitive and relevant, wineries are becoming far more proficient at wooing customers directly with wine clubs, creating memorable experiences and emotional connections to the wineries…Winery Equity Crowdfunding Raises Opportunities, RisksMany are familiar with the rewards-based model of crowdfunding popularized by websites like Kickstarter and Indiegogo…Proposed Wine Shipping Bill Needs Amending to Serve Arizona ConsumersEl Niño Remains Among Strongest Ever Recorded, but California Impacts (So Far) a Bit Different Than AnticipatedWine-On-Tap Sales Surge as Restaurateurs Seek Efficiency, Freshness, SustainabilityOhio Bill Would Allow Local Wine Sales at Farm MarketsSonoma County’s Wine and Tourism Industries Make Nearly $1 Million Bet on the Super BowlBuilding a World-Class Wine Research ProgramOregon Symposium Time, Conference Growing with and for a Brimming IndustryTerlato Adds Burgundy’s Luxury Château de La Tour Wines to PortfolioGambero Rosso Launches Five-State U.S. Tour Feb. 2-16; Miami Kicks It Off with Falanghina FocusMasters and Makers @ Meritage, The Ultimate Napa Valley Food and Wine Experience, Menus and Winery Participants AnnouncedWine Sales Rise in Run-Up to Super BowlWIN Jobs:Sales RepresentativeCriveller California Corp – Napa, CA, United StatesCustomer Service ManagerT. Elenteny Imports – New York, NY, United StatesLabeling Machine TechnicianImpresstik Labeling Systems – Napa, CA, United StatesMore Wine Industry Jobs…Feature Your Job Listing in the Afternoon BriefBlogs:Fred Franzia and the Future of the Wine BusinessFred Franzia Largely Got It RightWine Here! A Football Bud Gets CompetitionWhy Wine Shouldn’t Be SimplifiedExpectations of a New YearThe 10 Rules of Food and Wine Pairing by Karen MacNeilDoes Aging Wine Under Water Have Benefits, Or Is It Going Overboard?Top Advances in Wine Technology and What They Mean to UsConsumer Demand Shapes DTC Wine Industry in 2016Wine Blogging Is Dead! Again! Long Live Wine Blogging!Mission PossibleWhy the American Wine Industry Needs a Shakeup5 Top Emerging Wine Regions to Experience in 2016DTC Secrets: When to Call to Maximize SalesIs the U.S. Wine Boom Over? TAGSCaliforniaDTCFrankengrapesFred FranziaNapaOhioOregonSonoma CountySuper Bowl 50TerlatoUS beverage industry expoUSbevX Twitter Advertisement Previous articleProposed Wine Shipping Bill Needs Amending to Serve Arizona ConsumersNext articleRenaissance Yeast Inc. to Exhibit at CiderCON 2016 February 3–5, in Portland, Oregon Editor
Tags :city councilcoastfestivalopen streetsSanta MonicaSanta Monica Festivaltrafficshare on Facebookshare on Twitteradd a commentActivists press for district based electionsNorovirus cases declining at local schoolsYou Might Also LikeFeaturedNewsBobadilla rejects Santa Monica City Manager positionMatthew Hall11 hours agoEntertainmentLifeNoteworthyTales of Two DaughtersCharles Andrews17 hours agoNewsBruised but unbowed, meme stock investors are back for moreAssociated Press22 hours agoNewsWedding boom is on in the US as vendors scramble to keep upAssociated Press22 hours agoNewsCouncil picks new City ManagerBrennon Dixson22 hours agoFeaturedNewsProtesting parents and Snapchat remain in disagreement over child protection policiesClara Harter22 hours ago HomeLifeCoast festival is clear for 2017 Mar. 01, 2017 at 8:52 amLifeNewsCoast festival is clear for 2017editor4 years agocity councilcoastfestivalopen streetsSanta MonicaSanta Monica FestivaltrafficGoSaMo, Coast, At least one day a year traffic will not be a problem in downtown Santa Monica. After a successful launch last summer, Santa Monica’s first open streets event is coming back for round two.The City will merge last year’s popular Coast Open Streets with Santa Monica Festival this fall, according to a newly released staff report. Staff members have not yet decided an exact date, but are looking at October since many Santa Monican’s June event calendars are already packed with graduation ceremonies and holiday travel. A fall date would also bolster local businesses as the summer tourist season begins to slump off.“Santa Monica no longer has an off season,” Santa Monica chief communications officer Debbie Lee said. “In October, the weather is still nice and if there is a ‘soft season’ that would be the closest.’”The newly named 2017 Coast Open Streets Festival is proposed as an annual event. Staff will aim to give community organizations that traditionally had a meaningful impact at Santa Monica Festival a spot in the new festival.With two miles of streets closed to cars, locals can lace up their roller skates or hop on their bikes. Restaurants on Main Street pull out picnic tables and diners stretch out into the streets. Cultural groups give impromptu dance lessons on Ocean Avenue and neighbors relax in the traffic free atmosphere of their own city.“We just want to encourage people to get out and explore and experience our city on foot and on bike and get used to getting around using public transit,” Lee said.Coast premiered last June to celebrate the opening of Expo Light Rail and the Colorado Esplanade. The event was considered a major success, with about 50,000 people turning out. Local blogs called it one of the best Los Angeles area events of the summer. Activities focused on art, sustainability and mobility.The event will take place on the same route as the June 2016 event: Main Street between Colorado Avenue and Marine Street, Colorado Avenue between 4th Street and Ocean Avenue, and Ocean Avenue between Wilshire Boulevard and Colorado Avenue. Those streets will be open to pedestrians and cyclists only. Cars can cross the event on Main Street at Olympic Drive, Pico Boulevard and Ocean Park Boulevard.A Metro grant, funds from the Santa Monica Festival, the GoSaMo initiative and other sources paid the $354,000 that it cost to put on Coast 2016. The Metro grant is not available for this year’s event and costs are expected to reach $400,000.Multiple City departments are involved in putting on the festival: the Cultural Affairs Division, Mobility Division, the Office of Sustainability and the Environment and the Office of Communications.Visit www.smgov.net/coast for more information. [email protected]
PeopleRegulatory AddThis Sharing ButtonsShare to LinkedInLinkedInLinkedInShare to TwitterTwitterTwitterShare to FacebookFacebookFacebookShare to MoreAddThisMore 18 MAR 2015 FCC chairman Tom Wheeler (pictured), facing accusations from Republican lawmakers that he crumbled under White House pressure to enforce stricter net neutrality rules, conceded that President Obama’s statement calling for re-classification of broadband providers as utilities was indeed an influence, but only insofar as financial markets weren’t spooked by the prospect of tougher legislation.President Obama, in November, had urged a so-called Title II utility approach to broadband providers, while Wheeler had appeared previously not to favour resurrecting ‘depression era’ legislation from the 1930s, preferring instead a much lighter touch.Much to the chagrin of many Republicans, however, the Democratic FCC chairman seemed to change his mind following the president’s intervention. Some accused him of being “blindsided” by the White House.In his appearance in front of the House Oversight and Government Reform Committee, Wheeler insisted the White House gave “no secret instructions” on net neutrality rules.He argued that the lack of market reaction to Obama’s statement was instead an influence in his thinking, as was the willingness of companies to spend nearly $45 billion on AWS-3 spectrum.In his defence of tougher net neutrality rules at this year’s Mobile World Congress, Wheeler argued that operators would not be put off from investing by net neutrality rules, pointing out that AWS-3 airwaves had ‘open internet’ conditions attached to them.“The President’s focus on Title II put wind in the sails of everyone looking for strong open Internet protections,” Wheeler said at the committee hearing, quoted by the Wall Street Journal.Just prior to MWC 2015, a 3-2 vote by FCC commissioners – split down party lines – saw broadband internet service providers regulated under Title II of the Communications Act.The FCC now has the legal authority, in cases where it sees fit, to ban providers from blocking, throttling or offering paid prioritisation.And mobile operators fall squarely under the new regulation. While the FCC’s 2010 open internet rules had “limited applicability” to mobile broadband, the new rules will fully apply to the mobile industry.On publication of the FCC’s 400-page document on net neutrality rules, Republican commissioner Ajit Pai accused the US regulator of “turning its back on internet freedom”, although Wheeler was at pains to stress at MWC that Title II had been modernised. “This is about as far as you can get from old school regulation,” he said. Previous ArticleFacebook users can soon use Messenger to send moneyNext ArticleCyanogen lines up $110M in funding, has bigger plans Ofcom: 5G presenting challenges for spectrum planning Tags EC clears Nokia/Alcatel-Lucent deal EC opens Qualcomm antitrust probe Ken Wieland Related Author Ken has been part of the MWC Mobile World Daily editorial team for the last three years, and is now contributing regularly to Mobile World Live. He has been a telecoms journalist for over 15 years, which includes eight…More Read more Home FCC’s Wheeler admits reaction to Obama statement influenced net neutrality thinking
Jordan Anderson found himself opening the NASCAR Camping World Truck Series in a similar spot to last year, edged by less than a truck length after a frenzied overtime charge. Cory Roper was in unfamiliar ground altogether, in sight of the checkered flag at Daytona International Speedway with no top-five results in his previous 27 efforts in the series.RELATED: Race results | Watch the thrilling final lap | Speedweeks scheduleThe two underdogs found common ground in Friday night’s Next Era Energy 250 at Daytona, with Anderson matching his career-best from a year ago in second place and Roper right behind him, scoring a personal high of third. Both avoided the last-lap carnage that thwarted their rivals, and the pair were just a short distance behind Ben Rhodes’ race-winning No. 99 ThorSport Racing Toyota at the end.For Anderson, his result was a near replay of the 2020 Daytona opener as he came home second behind another ThorSport contender, Grant Enfinger. This year, it was Rhodes with the upper hand, but his nifty carving act through the field — “a pure Moses moment,” he said, describing his run from outside the top 10 to the podium on the final lap — was a highlight-reel performance.Like last year, the outcome prompted an emotional post-race interview with the engaging South Carolinian, who has grown his racing operation working within a strict budget. Anderson plans on competing for championship points with a move to the Xfinity Series this season, but the 29-year-old owner/driver opted against shuttering his Truck Series outfit — a move that paid off with his second career top five.RELATED: Jordan Anderson to run full Xfinity Series slate“It’s pretty crazy. It’s a huge boost,” Anderson said, noting Bobby Reuse would drive his No. 3 entry next weekend at the Daytona Road Course. “… We almost shut this truck deal down. We wanted to keep it going because we had so much blood, sweet and tears put into this program the last three years and wanted to keep it going to hopefully provide an opportunity for drivers like myself that just needed a shot to come run a truck some this year. Excited to see how that might shake out.”Roper’s rally to final-lap victory contention didn’t equal Anderson’s in terms of positions gained, but it was no less dramatic. His No. 04 Roper Racing Ford scraped the outside retaining wall shortly after the white flag flew, but it didn’t slow him as he snatched the top spot away from defending series champ Sheldon Creed, with Rhodes in tow.Rhodes pressured then bypassed him out of Turn 4 as a chain-reaction crash broke out behind the lead fray. Anderson kept his momentum to push Roper back one spot in the final rundown, but the 43-year-old Texan was all smiles after easily topping his previous best finish of ninth at Texas Motor Speedway in 2019, despite coming so close to a breakthrough win.“It’s bittersweet. I mean, you can’t be upset with a third in this series,” said Roper, who had indicated his team’s intent to run the full season after part-time campaigns the last three years. “This is probably the most competitive series on the circuit, I believe, just to make this race. We were this close to not making it, right? We were the last truck making it on speed, which we knew we were going to be struggling. … To get a good finish like that, you’ve got to be happy for your guys who work on it so hard.”
After a year-long, acclaimed international tour, Scottish-American singer-songwriter David Byrne’s acclaimed theatrical concert American Utopia will arrive on Broadway this fall. The production will play the Hudson Theatre beginning on October 4, 2019 and officially opening on October 20 for a limited run through January 19, 2020. In advance of Broadway, the show will play Boston’s Emerson Colonial Theatre from September 11-28, 2019. Tickets are now on sale.In American Utopia, Byrne shares the spotlight with a diverse ensemble of 11 musical artists from around the globe. The show was created with choreographer Annie-B Parson and production consultant Alex Timbers: his collaborators on the off-Broadway hit Here Lies Love.American Utopia began as an album that Byrne released on Nonesuch Records in March 2018. The recording was his first to reach #1 on the album chart and was also his first to reach the top five on the Billboard 200 chart. The concert, which includes songs from American Utopia, along with songs from Talking Heads and his solo career, played more than 150 dates in 27 countries over nine months in 2018. View Comments Related Shows David Byrne’s American Utopia from $299.00 Star Files David Byrne
The order is effective through Sept. 18. A signed version of the document will be disseminated Friday, Aug 28. “New Mexicans ought to be very proud of the progress we’ve made all together, but we’ve got to remember progress in our fight against this virus does not mean we can let our guard down,” said Gov. Lujan Grisham. “A sense of complacency will once again elevate the dire potential health risks for New Mexico families, neighbors and communities. We will continue to do everything we can as a state to mitigate the spread of the virus and address the awful economic consequences of this pandemic. “The virus is looking for opportunities to spread. We must continue to do everything we can to mitigate and eliminate those opportunities. We know the path to continued success by now: Wearing masks, avoiding groups, keeping physical distance and regularly washing our hands. At the end of the day, I can’t make New Mexicans stick to these safeguards. We’ve all got to make those decisions ourselves every day – and remember that our actions impact our friends, our families, workers and businesses in our communities and our entire state. More and more of us have been making those right decisions. Let’s keep it up.”PUBLIC SCHOOLSPublic Education Secretary Ryan Stewart provided an update Thursday as the agency works alongside school districts and charter schools statewide to ensure comprehensive COVID-19 safety and response protocols are established before any district or charter can be approved to begin limited in-person learning for K-5 age groups after Labor Day.The Public Education Department has set requirements for re-entry to a “hybrid” model of in-person and remote learning – meaning rotating cohorts of students could potentially attend in-person classes in small groups after Labor Day upon approval from the PED. Those requirements include that the state meet its gating criteria; that the school’s county meet gating criteria for the rate of new daily COVID-19 cases and test positivity; and that the Public Education Department approve the district or charter school’s individual re-entry plan, which must include COVID-Safe Practices for students and educators as well as provisions of personal protective equipment, cleaning procedures and rapid response procedures in the event of a positive COVID-19 case. The Public Education Department has been receiving and reviewing re-entry proposals from districts across the state in anticipation of a possible shift to permissible limited in-person learning after Labor Day. At least 24 school districts and charter schools statewide, including Albuquerque Public Schools, have notified the Public Education Department that they plan to continue in an exclusively remote learning environment for at least the near-term future. In the interim before Labor Day, in addition to outreach to local leaders and superintendents, the Public Education Department will continue to review re-entry proposals before formally approving districts seeking to begin classes for the K-5 age groups in a hybrid model (middle school and high school age groups would follow in a similar fashion if and when health conditions warrant). The agency will provide additional training for districts to ensure all schools are fully prepared to engage in any prospective rapid responses; and will finalize cleaning and sanitation protocols for districts and establish and refine enforcement and inspection protocols with the New Mexico Department of Health and other state agencies. PED will launch an anonymous portal where violations of COVID-Safe Practices can be reported.“Our work has been to coordinate closely with school districts and local leaders to make sure we have strict and effective protocols to prevent positive cases and to make sure we can quickly respond to any positive cases that do occur,” Stewart said. “We have been preparing extensively and I’m confident we will execute. I’ve visited school districts and with educators and local stakeholders. We are all one community and our unequivocal priority – the safety and welfare of our children and school communities – is shared. We must also, to that end, ensure personal protective equipment is available. School districts across the state have already purchased more than 3.5 million masks, and PED and DHSEM will distribute another 700,000 in the next two weeks. “This is all in service of making it possible for districts to make the case for an in-person learning environment this fall,” he added. “Of course, the virus has radically altered our lives, and that includes our public education system, and it’s an enormous strain on families, educators and children. We’ve got to step up to provide the best and safest circumstance for them. Our focus has been and will continue to be that we effectively deliver high-quality education to our kids during this pandemic with the health-first imperative that in-person learning can only happen if and when every single precaution for students, families and school communities is in place.” STATESANTA FE – Gov. Michelle Lujan Grisham and state health and education officials on Thursday provided a public update on the state’s COVID-19 response and recovery efforts, outlining a new emergency public health order and New Mexico’s preparation for a limited re-entry to in-person learning next month.MODELINGNew Mexico’s gating criteria – a measurement of the public health data reflecting the incidence and spread of COVID-19 – show the state has seen success in suppressing the virus while also maintaining essential virus-response and health care resources over the course of the late summer. Although the overall COVID-19 infections in the 20-29 and 30-39 age groups remain higher than other age ranges, the state’s decreasing and steadying test positivity rate, average case counts and hospitalizations reflect increased adherence to important COVID-safe behaviors like consistent mask-wearing and avoiding groups and extended periods of contact with others, said Human Services Secretary David Scrase, M.D. The secretary again issued words of caution about the devastating potential health effects of the virus and the imperative to maintain safe behavior. “COVID-19 can cause very, very serious illness in people of all ages, and we’ve got to take that seriously in all aspects of our lives,” Scrase said.PUBLIC HEALTH ORDERPursuant to the state’s sustained progress on suppressing the spread of the virus in recent weeks, New Mexico will permit certain relaxations of occupancy restrictions while maintaining the essential public health framework for mitigating and responding to the incidence and spread of COVID-19.The state’s revised emergency public health order is effective Saturday, Aug. 29 and incorporates the following adjustments: Houses of worship may operate at 40 percent of maximum occupancy of any enclosed building, an increase from 25 percent, in accordance with COVID-Safe Practices. Houses of worship may, as before, conduct services outdoors or provide services through audiovisual means.Food and drink establishments (including restaurants, breweries, wineries, distillers, cafes, coffee shops or other similar establishments) may provide indoor dining service at 25 percent of maximum occupancy, in accordance with COVID-Safe Practices. Food and drink establishments may continue to provide physically-distant outdoor dining options, carryout and delivery services, in accordance with COVID-Safe Practices. Tables – inside or outside – must be spaced at least six feet apart, and no more than six patrons are permitted at a single table. While museums with interactive and/or immersive displays, categorized as “close-contact recreational facilities,” must remain closed, museums with static displays may operate at 25 percent capacity. Mass gatherings of more than 10 individuals are prohibited.
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SkyBlue™ not only eliminates the complex calibration required for envelope tracking systems, but maintains efficiency at several backed off power levels with no significant impact to efficiency, even when compensating for varying losses in multiband devices. Further, SkyBlue™ has demonstrated Class 2 operation (26 dBm antenna power compared to 23 dBm antenna power in Class 3 operation), which results in much wider cell coverage within existing networks. SkyBlue™ will be particularly critical in helping meet emerging requirements for additional front-end output power demanded by carrier aggregation and high power user equipment (HPUE) demands for cell edge improvements by TDD carriers. Skyworks Solutions has launched SkyBlue™, a new technology that enhances both the power capability and efficiency in LTE amplifiers and front-end solutions. Designs utilizing SkyBlue™ technology not only deliver twice the power of envelope and average power tracking systems available on the market today, but across much broader power ranges. These efficiencies can be more than 15-20 percent in medium to high power ranges where an LTE system operates. Further, these efficiency and power enhancements are achieved with a much simpler implementation when compared to envelope tracking, making it easier for OEMs worldwide to deploy. The end result is envelope tracking-like system efficiency with the simplicity of average power tracking. In the first half of 2016, Skyworks will commence shipments of products leveraging SkyBlue™ with a tier one customer.While average power tracking is currently the most popular method to achieve higher power and efficiency gains in LTE amplifiers, Skyworks believes SkyBlue™ will quickly replace this technology as it delivers industry-leading performance in a straightforward design. Customers and OEMs can use their existing infrastructure to implement SkyBlue™, enabling some of the highest performing platforms with the shortest times to market when compared to competing envelope tracking alternatives which are more difficult to calibrate. Skyworks plans to leverage SkyBlue™ throughout its next generation of highly integrated SkyOne®, SkyOne®Ultra and SkyLiTE™ product families, as well as its multimode, multiband power amplifiers covering all application segments.
Carrick-on-Suir Gymnast Kellie O’Donnell has won 3 silver medals at the Special Olympics at Abu Dhabi.O’Donnell, 24, was placed fifth overall.91 Irish athletes are competing in 12 sports in all – backed up by a 39 strong volunteer management team. The games run from March 14th to 21st with 7,000 Special Olympics athletes from 170 countries competing.