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Bahamas Public Forecast

first_imgFORECASTER: G. GREENE /C.G Facebook Twitter Google+LinkedInPinterestWhatsAppBahamas, June 29, 2017 – Nassau – THIS IS A PUBLIC FORECAST FOR THIS AFTERNOON AND TONIGHT THURSDAY 29TH JUNE 2017 ISSUED BY THE BAHAMAS DEPARTMENT OF METEOROLOGY AT 12PMGENERAL SITUATION:  A SURFACE TROUGH ACROSS THE NORTHWEST BAHAMAS WILL WEAKEN AND MOVE WEST OF THE AREA THIS EVENING AS FRONTAL BOUNDARY DISSIPATES NEAR CENTRAL FLORIDA. MEANWHILE LARGE HIGH PRESSURE RIDGE ACROSS THE ATLANTIC OCEAN WILL CONTINUE TO SUPPORT BRISK WINDS OVER THE CENTRAL AND SOUTHEAST BAHAMAS.SPECIAL WARNINGS: MARINERS AND BEACHGOERS ACROSS THE CENTRAL AND SE BAHAMAS SHOULD BE ALERT FOR THE MODERATE RISK OF RIP CURRENTS AND DANGEROUS SURF ALONG EASTERN SHORELINES.NORTHWEST BAHAMASWEATHER:  VARIABLE CLOUDS, HOT AND HUMID WITH WIDELY SCATTERED SHOWERS OR ISOLATED THUNDERSTORMS TODAY, SOME LOCALLY HEAVY AT TIMES. PARTLY CLOUDY AND WARM TONIGHT WITH THE CHANCE OF A PASSING SHOWER OR TWO.ADVISORY: BOATERS SHOULD BE ALERT FOR GUSTY WINDS AND HIGHER SEAS IN OR NEAR HEAVY SHOWERS OR THUNDERSTORMS.WINDS: EAST TO SOUTHEAST AT 10 TO 15 KNOTS OVER OPEN WATERS, FALLING LIGHT AND VARIABLE AT TIMES.SEAS: 2 TO 4 FEET OVER THE OCEAN.CENTRAL AND  SOUTHEAST BAHAMAS.WEATHER: PARTLY SUNNY, HOT AND BREEZY WITH PASSING SHOWERS OR A POSSIBLE THUNDERSTORM LIKELY TODAY. FEW CLOUDS AND BREEZY TONIGHT WITH THE CHANCE OF ONE OR TWO PASSING SHOWERS.ADVISORY: SMALL CRAFT CAUTION CONTINUES FOR THE CENTRAL AND SOUTHEAST BAHAMAS.WINDS:  EASTERLY AT 15 TO 20 KNOTS OVER OPEN WATERS.SEAS: 4 TO 7 FEET OVER THE OCEAN.DAYTIME HIGH TEMPERATURE  91 °F      33 °COVERNITE LOW TEMPERATURE 77 °F      25 °CSUNSET: 8:03 PM  THU                   SUNRISE: 8:04 AM  FRIMOONRISE: 12:03 PM THU             MOONSET: 1:18 AM FRIHIGH TIDE: 1:10 PM THU                1:27 AM  FRILOW TIDE: 7:19 PM  THU               7:56 AM  FRIWEATHER OUTLOOK FOR FRIDAY: PARTLY TO MOSTLY SUNNY, HOT AND HUMID WITH FEW PASSING SHOWERS OR POSSIBLE ISOLATED THUNDERSTORMS.TROPICAL WEATHER OUTLOOK: TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 5 DAYS. Facebook Twitter Google+LinkedInPinterestWhatsAppcenter_img Related Items:last_img read more

Can alkaline earth metals be used in quantum computing

first_img Explore further Daley is a physicist in the Institute for Theoretical Physics at the University of Innsbruck and the Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences in Austria. He, along with Martin Boyd and Jun Ye at the University of Colorado, and Peter Zoller at Innsbruck, are proposing a quantum computing scheme that would make use of overlaying optical lattices to store information as well as perform computations. Much of this work was performed when the authors were guests at the California Institute of Technology in Pasadena, and their ideas are shared in Physical Review Letters: “Quantum Computing with Alkaline-Earth-Metal Atoms.”Electrons play a vital role in quantum computing with atoms, and when atoms are controlled with light, the electrons are also controlled. “That’s what makes alkali atoms nice to deal with,” says Daley. “They only have one valence electron, which makes the system really simple.” He then points out that alkaline earth metals offer an advantage over alkali atoms: “There are two electrons weakly bound. Even though the system is a little more complicated, there are some very nice properties.”Daley explains that it is possible to excite an electron to higher energy states in which they remain for a relatively long time. “The idea is to create two different traps using two different colors of light, one for atoms where the electron is excited and the other for atoms where it is not. This is possible because the atoms react to light, and go where the light is. Basically, we can make an array of bright spots of laser light – an optical lattice – where there is an atom in every bright spot.”In order to store information, Daley says, the spin of the nucleus is adjusted, also with laser light. “Atoms are initially stored in the lattice for the state where the electron is not excited. They can then be transferred to the state with an excited electron and transported to different parts of the system by moving the two different traps relative to each other. This can be used to perform computations with information stored on atoms in different parts of the lattice.”The paper Daley and his peers wrote expresses theory rather than describing the results of an experiment. However, it is possible that a demonstration might be possible fairly soon. “While this paper is theoretical,” he insists, “we build on techniques demonstrated in the laboratory, making use of technology that is currently applied to make atomic clocks.”Some of the details still need to be worked out, but Daley feels that it should be possible to build something workable to demonstrate the principle in the relatively near future. “We’ve taken our ideas of what can be done and matched them up with real numbers from experiments. This could lead to the first few steps and then be refined to make larger quantum computations.”“Our paper is a type of road map to set a course for what could be possible,” Daley continues. “We believe that with our technology it is likely that the first demonstrations are feasible on a timescale of two to three years.”More Information: Andrew Daley, Martin Boyd, Jun Ye and Peter Zoller. “Quantum Computing with Alkaline-Earth-Metal Atoms,” Physical Review Letters (2008). Available online: link.aps.org/abstract/PRL/v101/e170504. Copyright 2007 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. 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: Can alkaline earth metals be used in quantum computing? (2008, November 14) retrieved 18 August 2019 from https://phys.org/news/2008-11-alkaline-earth-metals-quantum.htmlcenter_img (PhysOrg.com) — “There are a number of different proposals for quantum computing,” Andrew Daley tells PhysOrg.com. “These include solid state or semiconductor as well as atomic and molecular systems. We are considering atomic systems, and more specifically alkaline earth metals.” Quantum simulation could help flights run on timelast_img read more