The Press-Dispatch
Issue link: https://www.ifoldsflip.com/i/1040210
A-8 Local Wednesday, October 17, 2018 The Press-Dispatch I am pleased to be offering my endorsement to Mark Flint for the 2018 race for County Commissioner. Mark will do a fantastic job for the citizens of Pike County. I have worked closely with him during my time as State Representative and State Senator on issues affecting your county. Please support Mark Flint to be your next County Commissioner. Sincerely, Mark Messmer Paid for by Mark Flint Commissioner BELIEVE IN PIKE COUNTY ENDORSED BY MARK MESSMER Commissioner FLINT Mark Where Helping You Dress Well Has Been A Specialty, Since 1922 Where Helping You Dress Well Has Been A Specialty, Since 1922 On e Square, Jasper 812-482-5514 • siebertsclothing.com Monday, Tuesday, ursday, Friday 9am-5:30pm Wednesday 9am-8pm, Saturday 9am-3pm Save up to $100 and more on our entire stock of quality suits and sport coats... shot the largest collection of American-made dress clothing in Southern Indiana... and, of course, free alterations! 96 years in business... and Still in Style! $20 SAVINGS on shoes from... TAKE THE 10-DAY WALK TEST If you're not satisfied, bring them back for a full refund!* *To receive a full refund, simply return the shoes with your original receipt within 10 day from the date of purchase. SALE ENDS OCT. 31! COOK ➤ Lifetime resident of Pike County ➤ Special Olympics volunteer for Pike and Gibson Counties ➤ Member of the Petersburg Fire Department IT'S TIME TO: ➤ Promote opportunities for jobs ➤ Develop more activities for youth YOUR VOTE IS GREATLY APPRECIATED! County Council, District #1 DAREN Elect Paid for by candidate Purdue researchers have creat- ed a new light source that gener- ates at least 35 million photons per second, increasing the likelihood of sending confidential information successfully using light. Single particles of light could bring the 'quantum internet' Hacker attacks on everything from social media ac- counts to govern- ment files could be largely prevent- ed by the advent of quantum com- munication, which would use particles of light called "pho- tons" to secure in- formation rather than a crackable code. The problem is that quantum com- munication is cur- rently limited by how much informa- tion single photons can help send se- curely, called a "se- cret bit rate." Pur- due University researchers created a new technique that would increase the secret bit rate 100 -fold, to over 35 mil- lion photons per second. "Increasing the bit rate allows us to use single pho- tons for sending not just a sentence a second, but rath- er a relatively large piece of information with extreme security, like a megabyte- sized file," said Simeon Bog- danov, a Purdue postdoctor- al researcher in electrical and computer engineering. Eventually, a high bit rate will enable an ultra-se- cure "quantum internet," a network of channels called "waveguides" that will trans- mit single photons between devices, chips, places or par- ties capable of processing quantum information. "No matter how computa- tionally advanced a hacker is, it would be basically im- possible by the laws of phys- ics to interfere with these quantum communication channels without being de- tected, since at the quantum level, light and matter are so sensitive to disturbances," Bogdanov said. The work was first pub- lished online in July for in- clusion in a print Nano Letters issue on Aug. 8. Using light to send information is a game of probability: Trans- mitting one bit of infor- mation can take multi- ple attempts. The more photons a light source can generate per sec- ond, the faster the rate of successful informa- tion transmission. "A source might gen- erate a lot of photons per second, but on- ly a few of them may actually be used to transmit information, which strongly limits the speed of quantum communication," Bog- danov said. For faster quantum communication, Purdue re- searchers modified the way in which a light pulse from a laser beam excites electrons in a man-made "defect," or local disturbance in a crys- tal lattice, and then how this defect emits one photon at a time. The researchers sped up these processes by creat- ing a new light source that includes a tiny diamond on- ly 10 nanometers big, sand- wiched between a silver cube and silver film. Within the nanodiamond, they iden- tified a single defect, result- ing from one atom of carbon being replaced by nitrogen and a vacancy left by a miss- ing adjacent carbon atom. The nitrogen and the missing atom together formed a so-called "nitro- gen-vacancy center" in a di- amond with electrons orbit- ing around it. A metallic antenna cou- pled to this defect facilitat- ed the interaction of pho- tons with the orbiting elec- trons of the nitrogen-vacan- cy center, through hybrid light-matter particles called "plasmons." By the center absorbing and emitting one plasmon at a time, and the nanoantenna converting the plasmons into photons, the rate of generating photons for quantum communication became dramatically faster. "We have demonstrated the brightest single-pho- ton source at room temper- ature. Usually sources with comparable brightness only operate at very low temper- atures, which is impractical for implementing on comput- er chips that we would use at room temperature," said Vlad Shalaev, the Bob and Anne Burnett Distinguished Professor of Electrical and Computer Engineering. Next, the researchers will be adapting this sys- tem for on-chip circuitry. This would mean connect- ing the plasmonic antenna with waveguides so that pho- tons could be routed to dif- ferent parts of the chip rath- er than radiating in all direc- tions. PATOKA RIVER NWR REFUGE APPRECIATION DAY Patoka River National Wildlife Refuge hosted Refuge Appreciation Day Saturday with 25 booths of environmentally-conscious vendors and edu- cators, as well as a kid house full of bird crafts and projects. Birds of prey performed a hunting demonstration, where the caretaker explained the North American Goss Hawk does not bond to their caretakers, but only respond to the incentive of the hunting lure and their training. Sophia Fullerton makes a bird feeder out of an upside down cup, peanut butter and birdseed at Refuge Appreciation Day Saturday at Wirth Park in Oakland City. Above: Rachel Hulfachor holds son Bryce, who points at Silvey, an Eastern screech owl held by Charlie Carpenter. Carpenter played a recording of the screech owl, which sounds somewhat like a pony. Below: Holly Hume gives Al and Margaret Dennis a run down of fur and antlers to identify.