pc加拿大

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2020年05月25日
中国科大在分子的量子纠缠研究取得重要进展

pc加拿大zhongguokexuejishudaxuedujiangfengyuanshilingdaodezhongkeyuanweiguancigongzhenzhongdianshiyanshiyumeiguoguojiabiaozhunjishuyanjiusuohezuo,zailizijingtixishixiandaidianyuanzihedaidianfenzidelianhediaokong,shoucizhibeiledanyuanzihedanfenzizhijiandeliangzijiuchantai,bingqietongguodingliangbiaozhengshouduan,quedingchanshengdeliangzijiuchanchaoguolinjieyuzhi。gaiyanjiuchengguoyi”quantum entanglement between an atom and a molecule”weitiyu5yue20rizaixianfabiaozai《ziran》shang[nature 581, 273–277(2020)]。zheixiangchengguoduiyuweilaikaolvshiyongfenzijinxingliangzixinxichuliyouzhongyaotuidongzuoyong。


muqianyouduozhongtixikeyongyutansuoshixianliangzichuanganheliangzixinxichuli。qizhong,fenzizuoweiduogeyuanzizuchengdexitong,yuanzijituankeyizhuandonghefashengzhendong,youcidailaidutedeshuxing。liru,leibituoluodezhuandongheshiyongdanhuanglianjiedexiaoqiuzhendong,fenzikeyiyoubutongzhuandongjiaosuduhejiaoduyijizhendongmoshi,zheixiejingdiandewuliliangkeyitongguoliangzihuaxingchengliangzizhuangtai。yincifenzikeyichuyunengliangkuaduxiangdangdadebutongliangzizhuangtai,zhuangtaizhijiannengliangchabiesuoduiyingdepinlvkeyicongjiejinlingyizhidaodashubaithz(meimiaobaiwanyici)deguangxuepinlv,yincifenzikeyizuoweimeijie,yongyupipeihegoutongpinlvjiongyidebutongliangzixitong,shixianfuhedeliangzitixihexinxichulipingtai。


pc加拿大lingwai,jixingfenzizhijiankeyichanshengzhangchengdexianghuzuoyong,youliyushixianxinxingdeliangzixinxichulipingtai;jixingfenziduidianchangfeichangmingan,keyiyuweiboguangzixitong,xuanbeiliangzhenzidengtixixianghuzuoyong。weilelianjiedangefenzidaoqitaliangzizaitiyichuandiliangzixinxi,yanshiliangzijiuchanshizhongyaodeyibu。danglianggelizichuyujiuchantai,bianbuzainengdandumiaoshumeigelizidezhuangtai,lianggelizixingchengyigejinmidezhengti,zheiyangdeguanlianshuxingzailiangzijisuanheyixieliangzijingmiceliangzhongyouzhongyaoyingyong。


zuijinguoneiwaiduiyufenzideyanjiuyouzhangzufazhan,zaixinxichulifangmianqudeyixilietupo,baokuoduifenzideshufuhelengque,fenzideliangzixinxigaozhiliangduchu,daliangfenzizhijianliangzijiuchandetansuo,yijigaojingdudefenzicepudeng。zhenkongzhongshufudedangefenzichidudeyanjiuyejisufazhan,youconglianggeshufuyuanzishengchengdangefenzi,danfenziyudanyuanzixianghuzuoyongdengzhongyaojinzhan。


zaizheixianggongzuozhong,tongguozailizijingtixishufudaidiandegaiyuanziheqinghuagaifenzi,shiyongjiguangdiaokongzhibeichutamenzhijiandejiuchantai。zheiyangdezhuangtaifeichangqite: jiandanlaishuo,danggailizidedianziguidaozhuangtaichuyujitai,fenzidezhuandongyezaidizhuandongnengliangzhuangtai(youzhuandongliangzishumiaoshu)deyizhongzhengtizhuangtai;tongshikeyi“diejia”jieranbutongdelingyizhongzhengtitai——qianzhechuyuguidaodejifatai,duiyingfenzichuyugaozhuandongnengliangdezhuangtai。xiangfandejifapeiduiyekeyizhibei。zheilijitaihejifataikeyicunchuliangzixinxi,leisierjinzhide“0”he“1”,yechengweiliangzibite。weilezhanshifenzizhuangtaidepinlvkuadu,shiyanzhongxuanqulezhuandongnengliangkaojindeyiduizhuandongtaizuoweibite,pinlvjiangefenbiewei13.4 khz(yuemeimiaoyiwanci)yijijiangewei855 ghz(meimiaojinwanyici),fenbieshiyongjiguangmaichongdingliangyanshiyuyuanzichanshengjiuchan。

 

这项工作使用的原子和分子,以及存储和处理信息的能级


pc加拿大zheilishiyongdejiguangdiaokongjishubaohanduogebozhang(yanse)dejiguang,baokuoziwaiheduogehongwaiboduan,yongyupipeixiangyingdeyuanzihefenzipuxian,yishixianlizidelengque、tanceyijiliangzitaidiaokongdengguocheng。zheilijiehelejinnianlaifazhandeduoxiangzhongyaojishu,baokuoliyongdaidianyuanzihefenzidedianxianghuzuoyongshixianxinxidechuandi,keyizaibudiushifenzideqingkuangxialiyongyuanzijianjieduchuqixinxi;shiyonghongwaidejiguangshixianfenzizhuandongtaidegaojingdudiaokongdengjishu。shiyanzhong,yanjiurenyuanshouxianchushihuayuanzihefenzidaomougequedingdedinengliangzhuangtai(jitai),bingqielengquetamendeyundongdaojiejinliangzidejixian。jiershiyongjiguangzhibeichudangefenzizhuandongweidu,zhuandonggaodinengliang(keyiguqielijieweigaodizhuansu)zhuangtaidediejia,zaitongguoyixieliefuzadejiguangmaichongxulie,shidepirugaozhuandongnengliangdefenzidechengfenyinfayuanzishoujifadaogaonengliangzhuangtai(jifatai),chanshengsuoxudeliangziguanlian——jiuchantai。zuihou,tongguoguanchabutongqingkuangxiayuanzihefenzixietongdezhuangtaiguanlian,keyizhenghesuoyouxinxichengyigefanweizai0dao1zhijiandezhi,chaoguo0.5deyuzhijibiaoshijiuchantaidechuxian。shiyanzhongcededeshuzhizaiwuchafanweineiyuangaochuzheigeyuzhi,biaomingjiuchantaidechansheng。


benwendediyiwanchengdanweishizhongkeyuanweiguancigongzhenzhongdianshiyanshi。gaishiyanshizhuanzhuyuzixuankexuejishujiqiyingyongdeshiyanyanjiu,shibenlingyujuyouguojizhimingdudeshiyanshi。zizhuyanfaleyixiliexianjindezixuanshiyanfangfajishuheshiyanzhuangbei,jiangzixuandiaokongdelingminduhefenbianlvtishengdaoguojilingxianshuiping,zaiyuxinxikexue、shengmingkexuehejichuwulideqianyanjiaochayanjiuzhongqudelejuyouzhongyaoguojiyingxiangdeyanjiuchengguo。gaishicong2000nianqiyizhicongshizixuanxiangguandeliangzijisuanyanjiu,baochizheshiyongliangzisuanfawanchengzuidazhengshudezhiyinshufenjie、shiwengutaitixizuigaojingduliangziluojimenkongzhidengshijiejilu。


shiyanshizaishiyunianqianjikaishibujulizijingshiyanfangxiang。benwendiyizuozhehetongxunzuozhelinyihengjiaoshouzai2008-2009niancengzaishiyanshigensuidaoshidujiangfengjiaoshouhepengxinhuajiaoshoucongshihecigongzhenliangzixinxishiyanyanjiu,qudebenkexueweihoubeipaiwangmeiguokeluoladuodaxueboerdefenxiao,shicongnuobeierjiangdezhudavid j. winelandjiaoshouxuexilizijingshiyanyuanlihejishu。zaiguowaiqijian,linyihengfabiaole2pian《ziran》he9pian《wulipinglunkuaibao》。2018nianconghaiwaihuiguituandui,congshilizijingliangzixinxishiyanpingtaidepcjianadahexiangguanyanjiu。huiguohou,chufabiaolebenwendegongzuowai,linyihengyumeiguoguojiabiaozhunyanjiusuoyanjiurenyuanhezuodeshiyongguangpinshuduifenzidezhuandongnengjihezhuandongchangshujinxinggaojingduceliangdechengguoyeyu2020nian3yuefabiaozai《kexue》shang[science 367, 1458–1461 (2020)]。


benwenhezuozheweimeiguoguojiabiaozhunjishuyanjiusuokexuejiadavid leibrandt, dietrich leibfriedhechin-wen chou。zheixianggongzuodedaolekejibu、guojiazirankexuejijinweiheanhuishengdezizhu。


pc加拿大(zhongkeyuanweiguancigongzhenzhongdianshiyanshi、wulixueyuan、hefeiweichiduwuzhikexueguojiayanjiuzhongxin、keyanbu)


pc加拿大lunwenlianjie: https://www.nature.com/articles/s41586-020-2257-1



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