Wednesday, February 29, 2012

News Alert: North Korea Agrees to Stop Nuclear Tests and Uranium Enrichment at Main Facility, U.S. Says

Breaking News Alert
The New York Times
Wednesday, February 29, 2012 -- 9:19 AM EST
-----

North Korea Agrees to Stop Nuclear Tests and Uranium Enrichment at Main Facility, U.S. Says

North Korea has agreed to stop long-range missile launches, nuclear tests and uranium enrichment at its main facility, and the United States has agreed to a food aid package for North Korea, the State Department announced on Wednesday.

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http://www.nytimes.com/?emc=na

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【喷嚏图卦20120229】我觉得雷锋的传人应该5亿粉丝才合理

http://www.dapenti.com/blog/more.asp?name=xilei&id=58442


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每天一图卦,让我们更清楚地了解这个世界
【1】我觉得雷锋的传人应该5亿粉丝才合理
【央视报道:600万粉丝的雷锋传人】央视报道,雷锋传人郭明义已是全国道德模范。去年3月,郭开通新浪微博@鞍钢郭明义,不到一年粉丝数突破6百万,每天新增的粉丝量数以万计,成为微博明星。http://t.cn/zObmXbd
@谢佑平:刚才目睹了一个有15万多粉丝的用户@天佑中华A 被执行“死刑”,感觉微博的气氛阴森森的
@翁涛wt :天佑质疑了这位神一般的传奇人物@鞍钢郭明义 就被封了号,我好奇走去看一下,泥玛真把我吓一跳,竟是全国优秀共产党员、五一奖章获得者、感动中国人物、“雷锋传人”。现正赶上学雷锋的势头,你去讽刺一位〝雷锋传人〞不是找死吗?你不想想人家600多万粉丝过份吗,我觉得雷锋的传人应该5亿粉丝才合理。
【2】学习雷锋好榜样,忠于革命忠于党
【教育部要求将学雷锋纳入学生综合素质评价体系】教育部28日要求,各地教育部门和各级各类学校将学雷锋活动纳入学生综合素质评价体系,纳入中小学生思想道德教育和大学生思想政治教育工作质量评价体系;要求组织中小学生开展爱粮节水等活动,组织高校学生开展三下乡等实践活动。
【北京将每周六定为学雷锋日 】北京市委办公厅下发《关于弘扬北京精神深入开展学雷锋活动的实施意见》。今后,北京市将长期开展每周六学雷锋活动,“学雷锋”将成为北京市常态化、日常化、机制化的公民道德建设内容。同时推进北京精神进教材、进课堂、进学生头脑。
@王功权:一个政党利用自己控制的国家管理权力,对全国中小学生进行自己党的意识形态的强制灌输,进行所谓政治思想教育,这是典型的对青年的思想专制。教育部强令全国学生学习一个人,并把学得好坏作为考核学生重要考量标准,是何等荒唐!倡导助人为乐不意味着必须学习雷锋。雷锋没独立思想、迷信领袖 。
@兔子老愚:雷锋天性或许不坏,热心,想往上走,但一步步被强塑成当局愚民政策所需要的螺丝钉。他被灌输的迷魂药为:你父母都是黑暗社会的牺牲品,现政权把你从火坑里解救出来,你必须感恩而且只有感恩才有出路。在新社会,只有成为裆信任的人,才有前途。于是,他听从暗示,配合塑造工程师,把自己弄成了英雄。
慕容雪村:“学习雷锋”要有主语,在当下中国,谁需要学习雷锋?高干该学,普通公务员该学,城管该学,工商该学,警察该学,维稳办、截访队该学,大大小小的老爷们、代表们、委员们都该学。至于民众,爱学就学,不爱学就不学,但要时时盯着前面那些该学的,他们学得好不妨夸两句,学不好就打他们屁股。
 @杭州是江南 :【又穿帮了吧】雷哥,那地方好像真沒螺栓,你拿扳手擰啥捏?
The_sun_hust:解放牌CA---10型,5吨货车,前轮翼子板【挡泥板】那位子应该有一根紧贴挡泥板的扁钢支架头部用10mm外六角螺丝连接,图上的开口扳手应该是14/17的,用17那头应该是对的,照片没错!错在凭什么要拍照片。
@王晓渔: 在《江城》里,海斯勒讲到自己作为美国和平队志愿者,在内地一所师专教书的经历:“有些学生的职责就是把我上课的材料进行上报。他们极有可能是一些成绩最好的学生,也有可能是我最喜欢的学生。然而,他们还是把我说过的话记录在案了。每当上课的时候,我很难不想起这些事儿来。”
【3】这个在帐篷里做作业的孩子
@何光伟1983 :这个在帐篷里做作业的孩子,他的家被那帮官畜强拆了。孩子的父母今天告诉我,他家的养鸡场也被强拆,有近2000多只近2斤重的鸡被挖机推倒的房屋埋下,无耻的官畜们竟每只鸡只赔偿7元钱,而且仅赔偿500只。孩子70多岁的奶奶被一官畜当场推倒,身上数处青紫入院无人管。孩子的妈妈当时晕厥入院亦无人管。
@慕容雪村 :雷锋精神的核心是两个字:奉献。那种甘愿为他人付出的行为值得赞美,但也该明白,我们这社会更需要契约精神,而不是一方得利、一方受损的奉献精神。当一家公司号召其员工奉献,其实质就是盘剥,“你多干活,我少给钱”,或“你光干活,我不给钱”。当一个国家号召其国民奉献,其实质无疑于公开的掠夺。
【4】丈夫捅了她两刀,她又捅了丈夫两刀,夫妻二人都死了
@巨春雷:据可靠消息,曾经在影片《功夫·咏春》中饰演严咏春的青年演员@白静 于今晨在自己住所被其丈夫周成海刺杀身亡,目前警方已经控制现场,案件正在进行进一步调查! @白静 与丈夫周成海之间有第三者,还有经济纠纷,具体详情,稍后得到进一步证实公布于众!
28日下午,据@巨春雷微博透露,青年演员@白静于今晨在自己住所被丈夫周成海刺杀身亡,目前警方已经控制现场。白静同学@毛俊杰 确认属实。白静毕业于中戏2002级表演系本科,曾出演《见龙卸甲》、《功夫咏春》等影视剧。
@周华I : 该知情人称,周成海已经40多岁了,对小自己很多的白静比较疼爱,白静主演的电视剧《血色湘西》就是周成海投了大笔资金的。但相比之下,白静对周成海却并不好。在今年年初,白静还同外人,骗了周成海两千万,并设计让周成海嫖娼,企图逼其离婚,并在离婚案中分得大笔财产。不过,白静的算计被丈夫知道了
 
@法制晚报:【白静起诉离婚激怒其夫】本报上午从朝阳法院核实,白静在2月13日正式起诉离婚,理由是婚前不知周成海有过婚姻和孩子,甚至不知他比自己大18岁,还说周对其有家暴及婚外情(与此前传闻出入较大)。白静当天要求分割夫妻名下一处丽都水岸的房产。周成海昨天中午11点刚去法院领完传票,回家便拔出了刀。
 
@吴柳燃 :白静就住我们家小区,3号楼,刚才出门的时候司机跟我说,我出门的前20分钟刚把尸体抬走。具体是因为俩人吵架,丈夫捅了她两刀,她又捅了丈夫两刀,夫妻二人都死了。#演员白静遭丈夫杀害#
【5】高二女生裸身从教室“不慎坠楼”
28日,北京育英中学课间操时间,一个女生抱着衣服,裸着身子,站在高二教室窗口,把衣服一扔,跳下身亡。有同学看到这一幕后手一直发抖,听不进课。学校禁止学生向外透露信息、发微博,只说女生是不慎坠楼。“不慎坠楼还能脱衣服?”同学疑惑。
【6】一名中国女子在巴基斯坦遭枪杀
当地时间2月28日,一名中国女子28日在巴基斯坦城市白沙瓦遭枪杀,一同遇害的还有该女子的一名男同伴。白沙瓦警方称,遇害人在当地市场遭一名骑摩托车枪手的袭击。枪手射杀二人之后逃逸,这起枪击事件的动机暂时不明。
【7】青岛万科楼盘旁建变电站遭业主抗议
27日上午8时,山东青岛200余名万科蓝山的业主聚集在楼盘旁边的变电站门前进行抗议。楼盘为中高档小区,距离100米以内的地方将施建220千伏的大型变电站,因为担心自己会受到辐射,业主自发聚集在变电站门前进行抗议。
【8】五星饭店洗碗女工留剩菜为儿子补营养遭开除
47岁的李红在南京一五星级酒店当了4年洗碗工。3个月前,她留下客人吃剩的一些食物,想给正在读大学的儿子补身体,却被以盗窃酒店财物为由开除。“我留下来想带给孩子尝尝鲜,怎么就成了盗窃?”接受记者采访时,李红仍觉有苦难言。餐饮部经理称,“星级酒店员工带剩饭菜回家,成何体统?”
【9】只要把农村稳住了,首都就稳住了
2月10日起,河北省15000多名干部将进到5010个差村驻扎8个月,他们将与原单位脱钩,吃住在农村,主要任务是搞经济和维稳,确保10月底前不发生重大群体性事件,并大幅减少上访量。河北为此支付2.5亿元干部工作经费,并将给这些村子预留5亿元项目启动资金。(新京报)
邢台南石门镇大桃花村,驻村工作组住在村两委的办公室里
【10】刑法修订草案拟删除“被失踪”条款
中国人大召开前夕,著名法学专家透露,此前引发争议的刑法修订草案可能删除所谓的“强制失踪”条款,并加入尊重和保障人权的条文。有关消息说,即将在下周开幕的全国人大上讨论的《刑事诉讼法修正案(草案)》(以下简称“草案”),在去年底提交审议二审稿的基础上,又有新的“进步”。
【11】我们有一些东西你们必须要看一下,摸一下
【苹果确认3月8日召开发布会 预计推出iPad 3】邀请函并未明确透露发布什么产品,但显示的是iPad一角,以及“我们这里有些东西,你们必须看一看、摸一摸”(We have something you really have to see. And touch)。消息人士透露,下一代iPad将搭载四核CPU,支持4G LTE功能,将于3月9日发售。并将随iPad 3发布一款升级版Apple TV机顶盒。
【今日iPad之争终审】苹果出示“杀手锏”!——苹果称深圳唯冠就商标转让事宜签订了一个签名函,这份证据至关重要:该证据是用深圳唯冠的信头纸写的,同时落款是唯冠的董事长。苹果称,深圳唯冠矢口否认其是协议当事人一方,这份证据出示之后对方的说法不攻自破。静待唯冠回复中……来自广东高院官微
【12】香港特首在ICAC喝咖啡
香港廉政公署已决定立案调查行政长官曾荫权有没有触犯“防贿条例”或公职人员行为不当。调查特首对于廉政公署是38年来“破天荒”。曾荫权任期只剩4个月,但调查不会因任期完结而结束。乘搭私人飞机及游艇、租住深圳东海花园,接受红酒等都在调查范围内。
@莫乃光 : 廉署偵訊中
【13】这这这.......这可说点儿什么好呢
【郭敬明将任长江出版集团北京总编?】2月28日,郭敬明以出版人、社领导身份出席活动。长江文艺出版社副总编金丽红首次对外透露:“郭敬明未来将从长江出版集团北京图书中心的副总编辑升任为总编辑。其工作范围不光是负责青春文学,而是会逐渐涉足成人文学领域等。”
@郭敬明:哎呀!!!这这这.......这可说点儿什么好呢........
【14】意大利人上海丢手机 悬赏5千寻下落 网友劝其入日本籍
楚涵妈说:在天钥桥路看到的,帮可爱的意大利兄弟转
【15】一个父亲写给在美孩子的信
@青媒素:一个父亲写给在美孩子的信:儿子,你在美国的照片让网友翻出来了,爸爸很被动,不过,你不要担心,爸爸嘴硬,爸爸不回应。你在美国少上中国的网络、论坛、微博,更不要看爸爸的言论,爸爸在国内反美,就是为了让你在美国更好的生活,爸爸在国内被骂成狗,就是为了让你在美国活成人样。少接触中国人。
【16】人最可贵的品质就是低调
@明见7 : 鹅鹅鹅,喜欢唱红歌,白天逮美女,夜晚衣裳剥
 @慎独小猪:一个重大发现,一个震惊发现,一个雷人发现,一个暴汗发现:《月亮之上》的歌词竟然是从《诗经》翻译来的!神曲《忐忑》、《爱情买卖》也来自《诗经》……网友的力量太强大了,顶礼膜拜啊!
【17】中国网友:盖自己的楼,让别人无楼可盖
奥巴马google+页面,中国网友掀起一场“占领奥巴马”运动,网友留言摘录:1.沙發。2.奥哥,求女友一枚!3.强势围观。4.抢站票。5.围观。6.占座。7.路过。8.求包养。9.盖楼。10.撒花。最有才的一条评论是——推广汉语 人人有责……
BBC将“抢沙发”和“打酱油”翻译为占领家具并自带零食和饮料(theytalked about occupying the furniture and bringing snacksand soft drinks)。
【18】因她们全然是个谜
英国天体物理学大师霍金(Stephen Hawking),不仅对宇宙间的天体有兴趣,他对凡间的「天体」同样有「性」趣?美国八卦网站RadarOnline近日报导,有人目击行动不便的霍金光顾加州色情场所,让裸女在他腿上跳大腿舞。
报导称霍金十多年前已是换妻俱乐部的会员。但现年70岁的他2006年和第2位妻子伊莲离婚后单身至今。他上月接受《新科学家》杂志访问时坦言,自己每天都在想女人,「因她们全然是个谜。」
【19】尼克的爱马
澳大利亚吉朗海岸,尼克-格拉汉姆正与女儿一起骑马,忽然她们的马陷入了海岸的泥浆。尼克的爱马,18岁的Astro却越陷越深。随着潮水越涨越高,它面临溺亡的危险。幸运的是,通过救援人员的努力,Astro及时摆脱齐腰深的泥浆。在长达3个小时的营救过程中,尼克一直陪伴在Astro身边。
【20】肯德基30年来首次在伊朗开店
英国每日邮报报道,伊朗伊斯兰共和国建国30多年后迎来了首个肯德基店,这个店在中部的卡拉季市,在美伊关系因核问题趋紧的当下显得引人注目。店主人说,他花了5年才获得当地相关政府部门的许可。
【21】普京文章:“阿拉伯之春”西方行为卑鄙
普京周一在《莫斯科新闻报》发表文章,阐述他对国际事务的观点。他认为国家主权原则正遭毁坏,批评了“人权高于国家主权”说法;“阿拉伯之春”未按文明方式进行,统治方被更具侵略性的新统治力量所取代;通过暴力推行民主会适得其反。
【22】國務卿希拉里與突尼斯青年對話
@美國駐港總領事館:國務卿希拉里與突尼斯青年對話(摘要)﹕你们生活在一个你们的父母——更不用说你们的祖父母——无法想象的世界中:卫星电视、因特网、脸谱网等等。我的母亲生前说过:“把人脸放到因特网上干什么?”(笑声)新的通讯技术缩小了你们的世界,但拓宽了你们的视野。
借用乔布斯的话,我们不仅要在思维方面与众不同、另辟蹊径,还要有远大的理想,否则的话,就会失去眼前的历史机遇。那么年轻人到底想要什么呢?我认为,他们的追求和我们所有的人一样,那就是和平、繁荣、尊严、有机会参与、发表意见和投票表决的权利。
今天,新社交媒体能够被用来揭露腐败,鼓励透明和善治,应与现在人们享有的自由齐头并进,从而使民众不仅可以谋生,也有权参与。归根结底,尊严就意味着受到尊重,享有发表意见和参与的权利,甚至发挥领导作用。。。参与是达到目的的手段,而不是目的本身。
所有政党都必须遵守一系列基本规则:摒弃暴力;坚持法治;尊重言论、宗教、结社和集会自由;保护妇女和少数群体的权益;在竞选失利时移交权力;特别是在一个同一宗教内部和不同宗教之间存在严重隔阂的地区,要避免引起可能导致社会分崩离析的教派冲突。
制定一部宪法、管理一个国家需要全社会携手努力。没有任何一个人或任何一方能拿出万全之策。聆听与自己意见相左的人士,每一个国家都会变得更为强大。在制定宪法时,执政党必须与其他政党合作,包括非宗教性的政党,并说服各政治派别的选民们尊重基本的原则。
显然,人们会有分歧。美国236年来一直都分歧不断。大家不可能事事看法一致,但我们对民主制度的基本价值观有信心。常常有人问我,怎么能够在同奥巴马竞选对决之后又同意担任他的国务卿,与他一起共事?答案很简单。我们都热爱我们的国家。不错,我们(奥巴马和我在大选期间)有没有过激烈的竞争?我们的确有过非常激烈的竞争。我希望获胜;但他赢了。所以,我必须作出选择,那就是我们共同能为美国做些什么。
捍卫民主是每一个公民的责任。在革命爆发之后,历史进程可能出现两种方向:建设起一个强大的民主国家或者偏离轨道误入歧途,重蹈独裁和专制的覆辙。因此,现在要靠全体突尼斯人民对自己的体制保持信心,即使在你们支持的候选人在选举中失利时也不动摇。
【23】你看今年全世界各个国家发生的抗争,都是人民赢了
林祖銮:“我们拉动的这辆车,不是单车也不是摩托车,也不是汽车,是一台很老很破旧的牛拉车!”“我相信人民力量最大,谁都害怕。不符合人民利益的最终都会妥协。你看今年全世界各个国家发生的抗争,都是人民赢了。虽然付出了很多牺牲和代价,但归根结底都赢了。”
【24】代表要像鸡打鸣,不能不打,还要打得准
全国人大代表、华中师范大学教授周洪宇:公鸡打鸣不能乱打,打得太早,会被杀了吃肉。打鸣太晚,农人都起床了,也是白打。所以,代表要像鸡打鸣,不能不打,还要打得准。
【25】我们国家现在的情况,大体上跟一百多年前没有太大区别
张维迎:我们国家现在的情况,大体上跟一百多年前没有太大区别,和西方两百多年前,三百年前的状态没有大的差别,做生意仍然是一种特权,而不是一种自由的权利,是人家让你做或者不让你做。我们没有建立真正公民的概念,我们只有臣民,皇帝让你做就可以做,不让你做就不可以做。
【26】20世纪文学爱好者
@美剧迷 : 除了一直被认为性感符号外,玛丽莲·梦露(Marilyn Monroe)还是20世纪文学爱好者,所以常常有她捧书阅读的照片,图为1953年她在好莱坞家中。
【27】中国有公民吗?
@刘忠世:我很感兴趣这张照片。“中国公民道德论坛”,而且搞了九届了。什么是公民,宣宣解释过了吗?中国有公民吗?经常看到的不是下跪因而只是臣民吗?按照官府说法,“公民社会”不是陷阱吗?“公民社会”成为敌视的对象,公民何处存在?如果没有公民,何谈公民道德?照片来自@鞍钢郭明义 的微博。
【28】1938年4月28日,给共产国际总书记季米特洛夫,30万美元收据。
英国历史学家 Jon Halliday 翻拍自季米特洛夫档案。见 Jon Halliday、张戎合著《毛:鲜为人知的故事》香港开放出版社 2006年版 P270 插图之26 (via:@唐师曾
【29】看起来很舒服
德国的 Dornbracht 公司设计了这个淋浴,看起来就很舒服,它又六个花洒,可以覆盖到全身,并且花洒可以通过编程,让彼此之间有不同的压力和温度,使身体得到放松。
【30】什么产品/服务可以在未来5年正面影响1千万中国人?
李开复:你有梦想用科技推动人类进步么?Singularity挑战:什么产品/服务可以在未来5年正面影响1千万中国人?大赛冠军将获得$25000全额奖学金于今年暑假赴美Singularity大学参加为期十周的课程。详细参赛规则请见:http://t.cn/zOG3kWp
【31】月亮熊 http://t.cn/zOGSSbr
Popout
【32】人的整个一生常常在自己一无所知的年代被决定了。http://t.cn/zOGhdeB ()
@蔡崇达:刚打一辆车。的士师傅突然自言自语:我唯一的生活,就是在一条别人帮我决定的拥堵的路上,等待自己生命一点点的流失,换取这一点点我都不知道有没有意义的前行。

再过几天,欧美大学的家长会将在北京人民大会堂召开。(佚名网友)

来源:喷嚏网 综合编辑
友情提示:请各位河蟹评论。道理你懂的

Direct Measurement of the Formation Length of Photons

http://www.sciencedaily.com/releases/2012/02/120228102009.htm

ScienceDaily (Feb. 28, 2012) — How long does it take an electron to form a photon? The answer would normally be: so short a time that it cannot be measured. However, the international CERN team responsible for experiment NA63 -- mainly staffed by physicists from Aarhus University -- has now succeeded in dragging out the process, thereby making it measurable.



They achieved this by utilising the phenomena of objects moving slower and shortening in length from Einstein's theory of relativity, along with two pieces of gold foil and a micrometre screw.
In Niels Bohr's atom model, electrons orbit around the nucleus in 'shells' -- the so-called stationary states. Light is emitted by a quantum leap between a high-lying shell and one nearer the nucleus. However, it is impossible to find the electron between the two shells, so it could be thought that the light emission process itself was instantaneous: the electron is in the outer shell and immediately after sending out light, it is in the inner one.
However, Associate Professor Ulrik I. Uggerhøj, PhD student Kristoffer K. Andersen, Aarhus University, and the other NA63 members actually found that it takes the electron a measurable amount of time to emit light.
By letting the electron pass two very flat gold foils stretched out at a distance that can be measured with a precision of a few micrometres, they can 'force' the electron to emit shortwave light in a well-defined area. The distance between the foils corresponds to the length taken to form the light.
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The above story is reprinted from materials provided byAarhus University.
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Journal Reference:
  1. Kristoffer Andersen, Søren Andersen, Jakob Esberg, Helge Knudsen, Rune Mikkelsen, Ulrik Uggerhøj, Pietro Sona, Alessio Mangiarotti, Tjeerd Ketel, Sergio Ballestrero. Direct Measurement of the Formation Length of Photons.Physical Review Letters, 2012; 108 (7) DOI:10.1103/PhysRevLett.108.071802

World's Smallest Radio Stations: Two Molecules Communicate Via Single Photons

http://www.sciencedaily.com/releases/2012/02/120228101712.htm

ScienceDaily (Feb. 28, 2012) — We know since the dawn of modern physics that although events in our everyday life can be described by classical physics, the interaction of light and matter is down deep governed by the laws of quantum mechanics. Despite this century-old wisdom, accessing truly quantum mechanical situations remains nontrivial, fascinating and noteworthy even in the laboratory. Recently, interest in this area has been boosted beyond academic curiosity because of the potential for more efficient and novel forms of information processing.



In one of the most basic proposals, a single atom or molecule acts as a quantum bit that processes signals that have been delivered via single photons. In the past twenty years scientists have shown that single molecules can be detected and single photons can be generated. However, excitation of a molecule with a photon had remained elusive because the probability that a molecule sees and absorbs a photon is very small. As a result, billions of photons per second are usually impinged on a molecule to obtain a signal from it.
One common way to get around this difficulty in atomic physics has been to build a cavity around the atom so that a photon remains trapped for long enough times to yield a favorable interaction probability. Scientists at ETH Zurich and Max Planck Institute for the Science of Light in Erlangen have now shown that one can even interact a flying photon with a single molecule. Among many challenges in the way of performing such an experiment is the realization of a suitable source of single photons, which have the proper frequency and bandwidth. Although one can purchase lasers at different colors and specifications, sources of single photons are not available on the market.
So a team of scientists led by Professor Vahid Sandoghdar made its own. To do this, they took advantage of the fact that when an atom or molecule absorbs a photon it makes a transition to a so-called excited state. After a few nanoseconds (one thousand millionth of a second) this state decays to its initial ground state and emits exactly one photon. In their experiment, the group used two samples containing fluorescent molecules embedded in organic crystals and cooled them to about 1.5 K (-272 °C). Single molecules in each sample were detected by a combination of spectral and spatial selection.
To generate single photons, a single molecule was excited in the “source” sample. When the excited state of the molecule decayed the emitted photons were collected and tightly focused onto the “target” sample at a distance of a few meters. To ensure that a molecule in that sample “sees” the incoming photons, the team had to make sure that they have the same frequency. Furthermore, the precious single photons had to interact with the target molecule in an efficient manner. A molecule is about one nanometer is size (100000 times smaller than the diameter of a human hair) but the focus of a light beam cannot be smaller than a few hundred nanometers.
This usually means that most of the incoming light goes around the molecule, i.e. without them seeing each other. However, if the incoming photons are resonant with the quantum mechanical transition of the molecule, the latter acts as a disk that is comparable to the area of the focused light. In this process the molecule acts as an antenna that grabs the light waves in its vicinity. The results of the study published inPhysical Review Letters provide the first example of long-distance communication between two quantum optical antennas in analogy to the 19th century experiments of Hertz and Marconi with radio antennas. In those early efforts, dipolar oscillators were used as transmitting and receiving antennas.
In the current experiment, two single molecules mimic that scenario at optical frequencies and via a nonclassical optical channel, namely a single-photon stream. This opens many doors for further exciting experiments in which single photons act as carriers of quantum information to be processed by single emitters.
The experimental work was performed at ETH Zurich before the group of Prof. Sandoghdar moved to the newly founded Max Planck Institute for the Science of Light in Erlangen in 2011.
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The above story is reprinted from materials provided by ETH Zürich, via AlphaGalileo.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.

Journal Reference:
  1. Y. L. A. Rezus, S. G. Walt, R. Lettow, A. Renn, G. Zumofen, S. Götzinger, and V. Sandoghdar. Single-Photon Spectroscopy of a Single MoleculePhysical Review Letters, 108, 093601; Feb 27, 2012

Future Smart Phones Will Project Images On the Wall

http://www.sciencedaily.com/releases/2012/02/120228101706.htm

ScienceDaily (Feb. 28, 2012) — Mobile phones currently on the market are capable of showing high quality images and video, but the phones' small size sets insurmountable limits on screen size, and thus the viewing experience. VTT Technical Research Centre of Finland, EpiCrystals Oy and the Aalto University are developing a better laser light source for projectors that will be integrated into mobile phones, which will enable accurate and efficient projection of, for example, photographs and movies on any surface. Mobile phones equipped with the laser light source can be within the ordinary consumer's reach already in a few years time.


Small-size laser projectors 1-2 centimetres in length can be integrated into many kinds of electronic appliances, such as digital or video cameras, gaming devices and mobile phones. Integrated micro projectors could, in practice, project images the size of an A3 sheet of paper on a wall.
The challenge is to develop a small, energy-efficient and luminous three-colour (RGB) light source, whose manufacturing costs can be kept low, for use in the projectors. Solutions for these challenges are sought in a project combining Finnish know-how, whose parties are VTT, EpiCrystals Inc. and the Aalto University.
"The project has successfully combined multi-technological know-how from VTT and its partners in the project, from manufacturing materials and the accurate focusing of laser chips all the way to production line design. The project was launched last autumn, and we are now entering the stage where we can move from brainstorming and design to building prototypes. It is our goal to prove by next summer that large quantities of the new laser light sources can be manufactured quickly and economically ," says Principal Scientist Timo Aalto from VTT.
EpiCrystals Inc. aims straight for the global market with its product, and it is the company's goal to be the technology and market leader in laser light sources for micro projectors by 2015.
"We are developing an entirely new technology that is currently not in use anywhere else in the world. At the moment, there are stand-alone projectors on the market that can be connected to electronic appliances and early stage integrated projectors, but their quality and price are not competitive enough. Large electronics manufacturers are extremely interested in integrated projectors, and market research shows that demand for these micro projectors will increase strongly in the coming years. Soon, around two billion mobile phones per year will be sold in the world, and if even a couple of per cent of those contain a projector, we are talking about tens of millions of copies, and the hundred million mark is not far either," says Vice President of Business Development Tomi Jouhti of EpiCrystals Oy.
EpiCrystals' laser modules will be mass-produced in Asia, but the research and development will remain in Finland also in the future. The VTT, EpiCrystals and Aalto University project has received funding from the Finnish Funding Agency for Technology and Innovation Tekes, among others.
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