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The goal of a quantum internet is to connect quantum processors using long distance quantum communication.
The internet has had a revolutionary impact on our world. The long-term vision of this talk is to build a matching quantum internet that will operate in parallel to the internet we have today. This quantum internet will enable long-range quantum communication in order to achieve unparalleled capabilities that are provably impossible using only classical means.
Stephanie starts by exploring what a quantum internet is good for, and gives an intuition why quantum communication is so powerful. She proceeds from the state of the art today, towards stages for a full blown quantum internet. As an example, she discusses the efforts of the EU quantum internet alliance including the planned demonstration network connecting four Dutch cities in 2020. Stephanie Wehner is an Antoni van Leeuwenhoek Professor at QuTech, Delft University of Technology, where she leads the Quantum Internet efforts. Her passion is the theory of quantum information in all its facets, and she has written numerous scientific articles in both physics and computer science. In a former life, she worked as a professional hacker in industry. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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46 COMMENTS

  1. Amrtvideo Posted on July 13, 2020 at 1:30 pm

    "In a former life, she worked as a professional hacker in industry. " This has corruption written all over it. So Corrupt communications between countries or individuals can never be traced or documented. Full scale Mafia Rule. Hmmmm

    Reply
  2. Amrtvideo Posted on July 13, 2020 at 1:30 pm

    happy to be #33 in the thumbs down section. Lucky #

    Reply
  3. Elle Posted on July 13, 2020 at 1:30 pm

    Are we there yet? 🙂

    Reply
  4. B K Posted on July 13, 2020 at 1:30 pm

    Nice, but those shoes have got to go. Scientists and researchers already get a bad enough rap about how they dress, etc…

    Reply
  5. Robert Leifke Posted on July 13, 2020 at 1:30 pm

    How would distributed quantum computing look like?

    Reply
  6. earthwatcher2012 Posted on July 13, 2020 at 1:30 pm

    I was told there would be time travel

    Reply
  7. Above the Lies Posted on July 13, 2020 at 1:30 pm

    Female versi0n of carrot top….lmao

    Reply
  8. Greg Olsen Posted on July 13, 2020 at 1:30 pm

    Traverse the entire universe? 🙂

    Reply
  9. Greg Olsen Posted on July 13, 2020 at 1:30 pm

    Still waiting on Computers and internet to make life simpler? Another 20 years, maybe? 🙂

    Reply
  10. Tech CD Posted on July 13, 2020 at 1:30 pm

    12:57 a hot women in frame spotted I'm not your god just a guy with internet connection.

    Reply
  11. TRIPPLE JAY Posted on July 13, 2020 at 1:30 pm

    Who's watching this in 2020? And would now like to see this demonstration of the Quantum Repeater or Teleportation.

    Reply
  12. HITESH PRAJAPATI Posted on July 13, 2020 at 1:30 pm

    Great
    Seeing this video in 2020 and pride to say that i read an article saying that new record of distance is made on sending the cubits from one place to another.

    Reply
  13. Cody Vandervoort Posted on July 13, 2020 at 1:30 pm

    I'm studying quantum cryptography under this amazing women! Superior Internet

    Reply
  14. Amrit Kalash Posted on July 13, 2020 at 1:30 pm

    Interesting

    Reply
  15. Branimir Antic Posted on July 13, 2020 at 1:30 pm

    So the comms are super secured! Yeah!
    Unless… quantum repeater.

    Reply
  16. Liberty Warrior Posted on July 13, 2020 at 1:30 pm

    It's 2020, did they do it yet?

    Reply
  17. Allan Haimene Posted on July 13, 2020 at 1:30 pm

    She's so hot ❤️

    Reply
  18. SOSHELP王 Posted on July 13, 2020 at 1:30 pm

    世界上已有美国、欧洲、中国等多个研究小组和机构致力于量子通信网的研发。

    2004年,中国科学技术大学潘建伟教授的科研团队首次实现五光子纠缠和终端开放的量子态隐形传输。

    2005年,美国建成了DARPA量子网络 [1] 。其连接节点有3个,分别为美国BBN公司、哈佛大学和波士顿大学,目前延伸长度为10公里。

    2008年8月,潘建伟团队研制20km级3方量子电话网络。 [2]

    来自12个欧盟国家的41个科研小组经过四年半时间,建立了SECOQC量子通信网络,并于2008年10月在维也纳现场演示了一个基于商业网络的安全量子通信系统。该系统集成了多种量子密码手段,包含6个节点。其组网方式为在每个节点使用多个不同类型量子密钥分发的收发系统并利用可信中继进行联网。

    2009年,潘建伟团队在合肥构建和演示了一个4节点全通型量子通信网络。其中任意两个节点都可以互联互通、实时地产生不落地量子密钥,进而用来进行各种加密的数据、语音和多媒体通信等应用。此网络基于诱骗态量子通信方案,大大提高了安全通信的距离和密钥产生速率,同时保证了绝对安全性。 [3] 其最近的两个通信节点超过16km。每个节点可工作在全双工模式,即同时作为量子信号发射和接收方进行量子通信。

    截止2009年,点对点的两方量子通信技术已经比较成熟, 科学家和技术人员利用光量子态已经能够实现几十公里到百公里级的两方量子密钥分发系统。 为了拓展应用,需对点对点的通信方式进行组网,满足多用户的通信需要。为了与现有通信系统兼容以及大量减少成本,量子通信网还将充分利用经典通信设施,如现有光纤网络。

    2014年11月15日,中国研发的远程量子密钥分发系统的安全距离扩展至200公里,刷新世界纪录。

    2016年8月16日,中国发射全世界首颗量子科学实验卫星。截至2017年8月,已完成了包括千公里级的量子纠缠分发、星地的高速量子秘钥分发,以及地球的量子隐形传态等预定的科学目标。

    2017年9月29日,世界首条量子保密通信干线“京沪干线”正式开通。当日结合京沪干线与“墨子号”量子卫星,成功实现人类首次洲际距离且天地链路的量子保密通信。干线连接北京、上海,贯穿济南和合肥全长2000余公里,全线路密钥率大于20千比特/秒可同时供上万用户密钥分发。 [4]

    2019年1月,中科院院士、中国科学技术大学教授潘建伟、教授包小辉等人研究量子网络取得重要进展,成功地利用多光子干涉将分离的3个冷原子量子存储器纠缠起来,为构建多节点、远距离的量子网络奠定了基础。

    Reply
  19. Russell Posted on July 13, 2020 at 1:30 pm

    So we looked at the data

    Reply
  20. Viorel Matei Posted on July 13, 2020 at 1:30 pm

    Highly doubt that this will trickle down to the avarage Joe. How will NSA track my communication?

    Reply
  21. Vinod Nair Posted on July 13, 2020 at 1:30 pm

    She looks and her expressions are like blonde Kangana Ranaut. ❤️

    Reply
  22. Philip Dennis Posted on July 13, 2020 at 1:30 pm

    Fascinating! Thank you Ms. Wehner.

    Reply
  23. Nova Verse Posted on July 13, 2020 at 1:30 pm

    The Ultimate VPN in other words.

    Reply
  24. Samuel Cerutti Pedroso Posted on July 13, 2020 at 1:30 pm

    She moves stranger

    Reply
  25. Sammed Pandharkar Posted on July 13, 2020 at 1:30 pm

    Nice topic, but these glimpses of audience looking in awe at the presenter is really distracting to be honest. What is this an episode of Voice?

    Reply
  26. D Man Posted on July 13, 2020 at 1:30 pm

    Great so use it on robots that you send to Mars for real time video feed and controls. Since its instant and solves the speed of light limitations. You dont send anything, Split the entanglement bits between 2 computers and send one to Mars, hook it up to local network on Mars.

    Reply
  27. Tony Company Posted on July 13, 2020 at 1:30 pm

    How about Bluetooth and WiFi ? Will they still work for quantum Internet?

    Reply
  28. rainartstudios Posted on July 13, 2020 at 1:30 pm

    The delay in her sentences really bugs me. She over use of stops and
    Commas 😠

    Reply
  29. Peter Quad Posted on July 13, 2020 at 1:30 pm

    Imagine 0 ping in CS:GO 😀

    Reply
  30. Viorel Galan Posted on July 13, 2020 at 1:30 pm

    the most rubbish Ted Talk i've ever seen so far. It would have been better to just send those cubits instead of her.

    Reply
  31. zizak143 Posted on July 13, 2020 at 1:30 pm

    Took her 15min to say somethinh anyone else would in 5…with all the puses and prolonging…. She's not a person you send on TED with limited time for speaking…. Anyone else could have said so much more

    Reply
  32. moshiko ssaass Posted on July 13, 2020 at 1:30 pm

    quantum internet will fix the pings and package lost in gaming, it will make me into a rich man because im a pro gamer but i live far away from my destiny Lol

    Reply
  33. arkdark555 Posted on July 13, 2020 at 1:30 pm

    ‘’A cubit can be zero and one at the same time.’’ A weird world of Quantum mechanics…It just is beyond our comprehensions. That’s it.

    Reply
  34. Mrdresden Posted on July 13, 2020 at 1:30 pm

    This is actually a pretty shallow talk. She drops plenty of names of technical procedures without any actual explanation of what they involve.

    Reply
  35. Roman Ivanovich Posted on July 13, 2020 at 1:30 pm

    idiots. you all die there.

    Reply
  36. Creighton Beaver Posted on July 13, 2020 at 1:30 pm

    One thing not comely right is when you measure a qbit that is entangled it doesn’t send a single photon to the other to keep the law of quantum entanglement because then it would be subject to entisn special theory of relativity and its maximum speed would be C or light and there have been multiple test done to see the speed of quantum entanglement and there have been indefinite results because of our level of technology but we can tell very well that it travels faster than light making a intergalactic internet like many have said possible. That one reason why we need a general theory of everything so that we can unite the Quantum world and normal world into one set of laws.

    Reply
  37. Hermit Posted on July 13, 2020 at 1:30 pm

    i just want fast cheap internet

    Reply
  38. Allan James Posted on July 13, 2020 at 1:30 pm

    B.E.E. building earth ecofriendly
    Appreciate the information

    Reply
  39. Eli Abadi Posted on July 13, 2020 at 1:30 pm

    Lol I'm so funny

    Reply
  40. Eli Abadi Posted on July 13, 2020 at 1:30 pm

    I showed this to my Entalgled particles

    Reply
  41. Alex Gonzo Posted on July 13, 2020 at 1:30 pm

    Maybe i'm not getting something, but what is to stop someone from entangling their own quantum repeater with your quantum repeater in essence "tapping the line"? If one entangles one particle with another and then someone else entangles with any of the first two particles then someone else would be able to monitor information in ones "quantum communications". Just a thought..

    Reply
  42. 6 Posted on July 13, 2020 at 1:30 pm

    The only L that's a W

    Reply
  43. Fergal Downes Posted on July 13, 2020 at 1:30 pm

    Hey there buddy, extremely good stream that you have here. I subscribed.

    Reply
  44. james roberts Posted on July 13, 2020 at 1:30 pm

    Break quantum computing and you will have an artificial super intelligence. Whoever does this first will be at an advantage that will last for the remainder of human life. Over the next decade the race for quantum computing an AI promises to make the space race look like two children fighting over an ice lollipop.

    Reply
  45. William Jayaraj Posted on July 13, 2020 at 1:30 pm

    That was a fantastic message by Stephanie Wehner on Quantum interning. Even a lay man like me could understand it. Thank you very much . William Jayaraj.

    Reply
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