Can we make quantum technology work? | Leo Kouwenhoven | TEDxAmsterdam 

This presentation was the first time I was able to grasp the power of quantum computing. Well done! Thank you so much.

Excellent talk! Highly accurate, highly understandable, highly interesting, and highly SIMPLE. Let us have more, please. Thank you.

"Superposition is a good thing. You should 'Like' it on Facebook" 10:03 The animation on using Qbits to solve a maze problem. The first time I've ever actually understood how Qbits actually help you to do something useful. Thanks guy!

I hadn’t realized that covalent chemical bonds are actually due to the superposition of electrons.

Best examples I've seen to approach understanding quantum computing

Excellent, lucid explanation! I thoroughly enjoyed the talk. Looking forward to next generation of things that will change the world.

Outstanding lecture! Answered many questions for me and increased my understanding of quantum physics and quantum computers.

Great talk, by far the best explanation of quantum computers. Thanks

What Leo illustrated beautifully was classical machines vs quantum computers with the hand shakes, but what he did not disclose is since we are made of superposition particles, that is was possible to greet everyone in the room simultaneously via teleportation & entanglement methods, brain-to-brain instead of mechanically hand-to-hand, so we are far from the realization our mind & body is capable at least of quantum communication and subtle quantum energy but we limited ourselves and the expression of ourselves only in classical, Newtonian ways. Our thinking will gradually change...

One of the best explanation of Quantum computing.

This video presentation is by far the best explanation and easy to understand the powerful nature of quantum computer. Thanks.

Your perception of quantum computing is real ⭐️ we applaud you for your presentation⭐️you made it simple to understand

A+ explaining. I can finally wrap my head around thinking this way.

Amazing, easy to follow talk, thank you!

It's been a valuable pedagogical explanation. Thanks for that!

Now I am truly convinced and inspired to be a Quantum Computer programmer and use QM for Agriculture Work! Perhaps bi-location from the accounts of great and holy Saints is a mastery of superposition. Thanks, Doc Leo for the leaf example with the superposition notation overlaid on it - that brings home the message.

Very sad, when a society decides that good people can be rejected based on a "lottery". But our society does many sad things. Your speech is easy to understand for beginners. Thank you!

The most important thing for everyone to remember... It's not always the most elaborate explanation to solve problems some times it's the simplest things ....

Best TED talk on quantum mechanics and superposition.

That one "ball" of a classical computer doesn't so much multiply as it becomes a wave function, according to quantum mechanics. When a quantum computer solves that "maze," i.e. finds the one solution that allows the ball to exit, that's called the collapse of the wave function.

Amazing presentation! One observation: the plants use photosynthesis to produce glicose, the oxigen is a (very important) byproduct. And the plant produce it for themselves not for us. But hey, he is into physics ;-)

one of the best video of quantum computer

Let's say there are 1024 possible paths in the labyrinth, which means we need 1024 qubits. This is realized by making a superposition of 10 electrons spins (the big difficulty in quantum computing is to keep this superposition stable because it takes just a little disturbance to destroy this superposition and this difficulty grows fast the greater the number of particles) meaning there are 2^10 (=1024) qubits (not electrons). Although there are also 1024 different combinations of 10 normal bits, we still just need 10 bits for each of these combinations, but when you make a computation with them you consider each combination in a sequence, which takes 1024 steps (or less) instead of 10 (or less). But my question is: at the points in the labyrinth where you can go in two directions, how is the superposition affected?

Muito bom mesmo. Gostei da explicação.

That's a great presentation, able to understand the quantum computing. The one thing i was shocked by is that this video is 8 years old.😳

Awesome video! Loved It! Just should have probably had a better title, e.g "Future Quantum Computing." But over all it was a pretty amazing video! I always enjoy watching physics Ted Talks, keep up the good work!

This is terrifying and SUPER exciting at the same time

Great idea Sir, and very well explained 💡😇👏💐

best explanation so far

Great presentation, but it goes to show how important a decent mic/audio tech can be. Difficult to focus with the pops and breathing that could have easily been suppressed or filtered out

Good explanation of the concept 👍👍

The labyrint parallel demo results in a different solution than the serial solution....it takes a longer route. Good that it is just a demo🤗

A 3rd state in storage is one thing (higher capacity, ...). The other is: Use quantum effects in algorithms to solve problems quicker. I"d like to see the algorithm you want to use to actually solve the maze like you showed in the animation, if you actually made it that far.

this is amazing, thank you :)

Human science is amazing. Man curiosity is motivation. By the other side, nowadays knowledge it not corrrect because we are sure that tomorrow will grow new theories and knowledges. Updating forever...

Bravo 👏 Soooo beautifully explained ❤🧡💛💚💙💜🤎🤍❤🧡💛💚💙💜🤎❤🤍

Very powerfull explanation

Just think about the number of children who are as brilliant as Leo born all over the world not lucky enough to be able to go on to study at university just because they were born in the wrong place. So much wasted human potential :(

Great presenation.

Just had a thought that I would like to share>>> I’m thinking harrp was created to listen and record earths magnetic field just like memory on water is taken, then put it down in computer formats and doing that would give them the entire history of everything that has been and gone on earth, they could also decipher it and put it into computer formats and in a readable language, how cool is that one.

I really liked the link between superposition of electrons to frame the larger discussion of chemistry. I'm a teacher, can you help me answer how best to introduce and discuss superposition with children?

Hope that @tudelft becomes the first in starting the quantum internet!

Brilliant 👏🏽👏🏽👏🏽

Nicely presented! Vedanta explained nonduality (superposition) many thousands of years back. Vedanta and quantum physics go hand in hand. Many of the founding fathers of quantum physics were experts in Vedanta.

To illustrate the "double the power" one qubit was added to a hallroom-sized machine which doesn't make sense in the 1st place. That machine would have been as small as a matchbox if not smaller.

Excellent presentation Brother

Awesome interesting talk

The shared electron between two atoms in an oxygen molecule does not split itself. It is basically sharing an orbit between the two oxygen molecules. Mathematically we might model it with a probability of being present 50% around an atom in any of the two oxygen atoms. This is not splitting the electron. What am I missing?

Thanks for the talk, .. is there references to the point you made about electrons turning to superposition to find their path in plant leaves? Also how does the electron (in that leaf) determine the end state/goal so that it moves towards it in a quantum sense? Last point, and quite similar to another commenter, has the meaning of super position now changed from from: "being in two states at the same time, but only found in one when measured" to "actually being in two places" as your example of the water molecule? was he trying to water down the meaning (expand it) for the public? and has the previous notion of that, the electron was simply shared between the two atoms to compensation the difference in charge? the last point was argumentative, ..

Nicely presented. The bigger issue will be to prove a computer is actually a quantum computer exhibiting superposition and entanglement. This is not easy. I think late 2015 D-Wave was able to prove their machines scales N2 rather than N3 using a 1152 qubit Washington processor.

very well explained.

Thanks for sharing information and pickoff

Post Covid effect: As soon as I see someone shake hands in videos from Pre Covid era, it sends a chill down my spine.

40 years ago I could but vaguely comprehend the language of differential equations like line integrals, vector products, let alone the mathematics they described. But the symbols at 8:05 boggle my "mind." I had no idea how far things had changed. I mean so politely, but to me it looks like language extraterrestrials would use, because it is looks so, well, alien.

Quantum computing nicely explained ...

From my work in Antihydrogen fusion I’ve found the oxygen atom to be the switching point between parallel universes/dimensions which is the manipulation of matter to exceed the speed of light and quantum entanglement which includes communications and the transportation of matter between levels of spacetime. The aether field is positive energy that builds a (spacing) between electrons and positrons. All matter is condensed light. Nikola Tesla knew about this. Oxygen is the magnetic connection to the aether field for all matter. Utilizing this technology will develop holographic energy and photon systems and spacetime transportation. You can store unlimited information in a parallel universe including spatial or quantum entangled positions for instant access and delivery. Quantum entanglement movie stadiums and communications systems. Unlimited spacetime to even depopulation of the planet. Antihydrogen fusion or dark matter producing dark energy or spacetime or aether field creates atmospheric sprites releasing atomic oxygen stored in the upper atmosphere and antihelium that collects in the outside of the Van Allen belt protecting the planet from the sun. Force fields!

I don't know too much about too much, but is it possible to use existing technology - such as current power lines, radio and satellite communications, even silicon computing devices with quantum technology and computing? - recycling the tech networks we already have, and implementing a new quantum based system on top ?

Like the leaf, nature employs quantum computers in many other systems. Our brain employs QC to process information, which gives rise to consciousness, so difficult to explain otherwise.

I'm more than impressed. I have no words.

Thank you,.... give me two !

very intuitive , absorbable

I have entered the 4th dimension in my mind. And its beautiful.

with the quantum computer, would it not be better to know you are asking the right questions rather than inputting supposition or preconceived notions of what one believes the problem is. For example, the speaker said we are wreaking the environment and resources. If one was to ask how do we stop this in the form of a question the answer that is easiest to come up with is destroying humans. However, if we were to ask the question is lack of resource availability a problem and can better use improve life on earth we would come up with a completely different answer. Input determines output

I have a question. If qbits are present in nature. And they use light as energy, why are we using so much energy to bring a chip in a fluid state? Isn't there a simpler solution?

I still don't understand how they can tell one electron apart from another, and how do they know it's superpositioned? How do they know it's not only one electron that's moving so fast (beyond the speed of light maybe?) and we are fooled into seeing it as two different electrons? In the same way that a TV with a certain frame rate can makes wagon wheels look like they are going backward or completely..

Two atoms are bound because the binding electron between them is in superposition, orbiting them both at the same time. 10:40 all the possibilities can be checked simultaneously in quantum computer through superposition. Like solving jigsaw puzzle.

With which classical computers he compares? Like from 40 years ago when there were no parallel computing and no multiple cores in the processors? And what he means by 2 times faster? What about clock speed?

First we have to get all compression ratios of matter. Which is why we don't know much about what kind of matter is there.

Is it just me or was that lady at 16:04 really looking forward to shaking his hand?

Great video

Wonderful speech, wonderful English, wonderful dream. But A I will not be kind to us, we will be in the way.

Always had a problem with qbit being 0 and 1 at the same time. Isn't it more correct to say that a qbit is any state between 0 and 1 and has a probability of collapsing to 0 or 1 when observed.

How is parallel computing is done and where the results are stored? How the to find the correct result.

i agree , the mission of advanced technology and human generation is use for recover our earth.

Why not have it read each quantum bit by its angular NxS axis rotation divided by maybe 24 points depending on how stable... instead of relying on the 3 spin states?

the device at the start is not actualy a computer by turing's specification, just a smart machine

OK. How do you then understand ~ in all of these infinite paths, that then will become expressed, exactly which one is relevant? I think this answer is used in typical computing already, and you are searching for Grant funds as needed, as not have chosen veterinary inclination.. ..as described in the talk...

quantum mechanics can do more than a super computer for exemple aura lampe; best view paint, calculated temperature seconde skin, new alliage of neutral metal etc .....

Never Forget about Alchemy and the Geometric principles of Science.😐 Science is a Beautiful Art.😐

Electron can't be at two places at the same time. It's just that we don't know where it is until it's observed.

Surprised this is not alive after so long today!!!

you know isn't this how classic computers started out and then you see them today imagine in like 80 years from now having quantum mechanic phones

Great talk I like the examples given, they are understandable analogies that "Make sense" (unlike quantum mechanics) However - for his last hope of being "more careful with our resources on earth" I think the NIKE philosophy will help is much sooner "JUST DO IT" !

Holy!!!! I want to study quantum Biology!!!!

Quantum computing is in infancy ! Only future time will tell true !

Here is what I wish; Someone would make a modeling where at every point in the model where a number(s) take(s) on a quantum state, the "changed numbered solution" could be examined by showing the changed numbered information and giving us a simple perspective on what has become Quantum. Show a number being created, by two other numbers in a quantum state. It is both numbers obviously at the same time, no different than a 0 or 1. But not in 0 or 1 state. Does this make sense? It is the next interval of Quantum computing where numbers become concious...when we start to see all numbers "meshing" together. For absolute "averages". Classical + Quantum = Superposition I am right about the way I am approaching this? :/ I wish i could add a photo here to better explain.

By Quantifying Against the Masses (Lets Say "Subdue & Multiply") it Tends To Limit the Possibility of Surface Estimation... People Either Force to Leap & Bound Their Way Through the Context or Simply Bound Dreaming Too Much! It is Forever Much Harder to Innovate Apon Pre Existent Infrastructure Unless We Erase the Foul Estimators & Simply Adopt Unicin To the "S-PHERICAL WHEEL". In a Nutshell: Calculus! Fatigue! Variation! i.e "Differentzialrechtung" (My German Spelling Bit Tatty) *Muti Dimensional Shifts *21st Century Real Estate *Roadmaps Towards Counter-Projectory Systems *Dual Magnacarta (lol) *Resistent Consumerism Or Even To Highlight "Accesorising More" & "Spoiling Less". Wow! Lets Just Take On Board What Is Naturally Fit To Address our Forward Incline By Tracking the Allocated Use of Our Greater Dependencies Like the Adoption of Response Ability So That Our Children Seize the Intuitive Platform of Natural (Yet Simple) Negotiation of Technical Requisition as Common as the Written Laws That Abide Good Use of Clincal Role/Assessment Engagement for both Leadership & Instruction/s. (Personified/Period). It Might Sound like a Movie or A-Bit Of a DreamScape Yet LIFE IS ALREADY WONDERFUL & ONE BIG CRAZE & MARVEL! *The Greatest Mediation Can be That of Example Setting... *The GREATEST SYNERGY is that Of LAWFUL ABODE! So Yes Fatigue Requires An Abundance of Ease And Our Humanity In These Fields Should be as Primative as Zest (i.e. Counter Projectory & The Negotiation (Wage) of Allocated Good Usages)

When he showed the maze, he said that Quantum computers solve the problem in Parallel. The key word here is Parallel. So, say you have 5 "for loops", the inner loop rely on the outer loop before it can run. How will that run in Parallel?

best of best

Wow!

Very good at all ☺️

I wonder if by the combination of Nano-technology and Quantum mechanics... the outcome he speaks of could be achieved? The bottlenecks could be overcome by creating the mechanical (nano) elements to supervent the excellerations via interconections of the singular. Being as ALL as ONE and no remainings equations/calculations required as it becomes self contained and therefore infinately accessable via the entirety? Just pondering is all???

I like this guy.

We will need the humanities more than ever to guide humanity through that which is brought about by the myriad of disruptive technologies and game changers!

very nice.

The Venus project plans to use supercomputers to solve all humanity's problems, including greed.

I dare him to do the handshake example now :)

I would love to show you how to achieve this goal

5:55 bi or omni-location ?

I still don't understand how a quantum computer outputs a detectable result. An electron can be anywhere, up until you ask it where it is. And then the very act of determining this totally changes its position.