书签 分享 收藏 举报 版权申诉 / 25
上传文档赚钱

类型量子信息-量子导引的实验研究与应用课件.pptx

  • 上传人(卖家):三亚风情
  • 文档编号:3482977
  • 上传时间:2022-09-05
  • 格式:PPTX
  • 页数:25
  • 大小:2.29MB
  • 【下载声明】
    1. 本站全部试题类文档,若标题没写含答案,则无答案;标题注明含答案的文档,主观题也可能无答案。请谨慎下单,一旦售出,不予退换。
    2. 本站全部PPT文档均不含视频和音频,PPT中出现的音频或视频标识(或文字)仅表示流程,实际无音频或视频文件。请谨慎下单,一旦售出,不予退换。
    3. 本页资料《量子信息-量子导引的实验研究与应用课件.pptx》由用户(三亚风情)主动上传,其收益全归该用户。163文库仅提供信息存储空间,仅对该用户上传内容的表现方式做保护处理,对上传内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知163文库(点击联系客服),我们立即给予删除!
    4. 请根据预览情况,自愿下载本文。本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
    5. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007及以上版本和PDF阅读器,压缩文件请下载最新的WinRAR软件解压。
    配套讲稿:

    如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。

    特殊限制:

    部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。

    关 键  词:
    量子 信息 导引 实验 研究 应用 课件
    资源描述:

    1、Demonstration of Multisetting One-Way Einstein-Podolsky-Rosen Steering in Two-Qubit SystemsOutline1.Background introduction2.EPR steering criteria3.Multisetting One-way EPR steering4.Conclusion Outline1.Background introduction2.EPR steering criteria3.Multisetting One-way EPR steering4.Conclusion Loc

    2、al hidden variableLocal hidden state Quantum nonloclaitya.measurement-device-dependentstate tomography projection measurement b.measurement-device-independent probability distribution Quantum nonloclaityprobability distributionsEntanglement A-to-B steeringBell non-localitycan notcan notcan not Quant

    3、um nonloclaityQuantum non-localityAlice(can not be explained by)Bob(can not be explained by)Entanglement(non-separable)Local Hidden State ModelLocal Hidden State ModelBell non-localityLocal Hidden Variable ModelLocal Hidden Variable ModelEPR steering(Alice-to-Bob steering)Local Hidden Variable Model

    4、Local Hidden State ModelWiseman et al.PRL 98,140402(2007);Jones et al.PRA 76,052116(2007)operational definitions Quantum nonloclaity Nonlocality,Steering,EntanglementFor Alice and Bob to demonstrate to Charlie that they can create entanglement between their labs.a).With no trust,they must demonstrat

    5、e Bell-nonlocality.b).With a trustworthy Bob,Alice must show EPR-steering.c).With both trusted,all that is needed is Entanglement.EPR steering:Asymmetric Bell nonlocality A Bsteering B A steeringQuantum entanglement Quantum nonloclaity Application:one-way quantum information tasks.EntanglementSteeri

    6、ngBell nonlocality(1)Alice sends a qubit to Bob(2)Bob announces the measu-rement directions to Alice (3)Alice measures and sends her results to Bob(4)Bob calculate the steering parameterAlice-to-Bob steeringEPR steering:The ability to affect the quantum state on one side with local measurements on t

    7、he other sideYa.Xiao,et al.Phys.Rev.Lett.118,140404(2017)Quantum nonloclaityOutline1.Background introduction2.EPR steering criteria3.Multisetting One-way EPR steering4.Conclusion量子导引的度量子导引的度EPR steering criteriaInequalityMulti-measurement settingsWerner statesettings23 or 460.5393100.52361/2D.J.Saun

    8、ders et al.Nat.Phys.6,845(2010)Defect:necessary and sufficient characterization of EPR-steering for Werner state量子导引的度量量子导引的度量P.Skrzypczyk et al.Phys.Rev.Lett.112,180404(2014).Steerable weightDefect:w=1 for all pure entanglement states量子导引的度量子导引的度EPR steering criteriaVon Neumann entropy 量子导引的度量量子导引的

    9、度量M.Piani et al.Phys.Rev.Lett.114,060404(2015).Steering robustnessDifficulty:need take all kinds of noise into cosideration量子导引的度量子导引的度EPR steering criteria noise assemblagesteering robustness of the assemblage A defined as:is unsteerable s.t.unsteerable!The length of Bloch vectorsteering radiusStee

    10、ring radius(our methods)Construction of LHSsteerable!Wu et al.Sci.Rep.4,4291(2014)量子导引的度量子导引的度EPR steering criteriaNecessary and sufficient criteriaOutline1.Background introduction2.EPR steering criteria3.Multisetting One-way EPR steering4.Conclusiontwo-settingqubit-qutrit systemu MotivationPhys.Rev

    11、.Lett.116,160403(2016).Phys.Rev.Lett.116,160404(2016).Nat.Photon 6,596(2012).Gaussian measurement One-way steering with infinite measurement settingsThe demonstration of genuine one-way steering with multimeasurement settings in the simplest bipartite system are still lacking.Experimental difficulty

    12、:verify the unsteerable genuine one-way steering state new criteria to characterize the steerabilitySolutions:Entangled p 1/3unsteerable from Bob to AliceUnsteerable p 1/2Separated p 1/2We consider the class of two-qubit statesJ.Bowles et al.Phys.Rev.A 93,022121(2016)One-way steering with infinite m

    13、easurement settingsFidelity=0.995u experimental realization One-way steering with infinite measurement settingsYa Xiao et al.Phys.Rev.Lett.118,140404(2017)twomeasurement settingsYa Xiao et al.Phys.Rev.Lett.118,140404(2017)Mean fidelity 99.4%One-way steering with infinite measurement settingsRed:one

    14、way steerable Blue:bi-unsteerableBrown:bi-steeralbethreemeasurement settingsRed:one way steerable Blue:bi-unsteerableBrown:bi-steeralbesteerable One-way steering with infinite measurement settingsDemonstration of multisetting one-way EPR-steering in a qubit-qubit systemthreemeasurement settings One-

    15、way steering with infinite measurement settingsOutline1.Background introduction2.EPR steering criteria3.Multisetting One-way EPR steering4.Conclusion We provide a necessary and sufficient criterion,steering radius,to quantify steerability.We demonstration of one-way EPR steering in a qubit-qubit systerm even for infinite-measurement.Our work provides a more essential and intuitive way to understand the asymmetric characteristic of EPR steering.123 One-way steering with infinite measurement settings“编辑推荐”文章的推介信 One-way steering with infinite measurement settings

    展开阅读全文
    提示  163文库所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。
    关于本文
    本文标题:量子信息-量子导引的实验研究与应用课件.pptx
    链接地址:https://www.163wenku.com/p-3482977.html

    Copyright@ 2017-2037 Www.163WenKu.Com  网站版权所有  |  资源地图   
    IPC备案号:蜀ICP备2021032737号  | 川公网安备 51099002000191号


    侵权投诉QQ:3464097650  资料上传QQ:3464097650
       


    【声明】本站为“文档C2C交易模式”,即用户上传的文档直接卖给(下载)用户,本站只是网络空间服务平台,本站所有原创文档下载所得归上传人所有,如您发现上传作品侵犯了您的版权,请立刻联系我们并提供证据,我们将在3个工作日内予以改正。

    163文库