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We are coming to you live from the coldest place in the known universe
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Well, near it anyway. What would you say if I told you that the headquarters for D-Wave - the world leader in commercial
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quantum computing systems - is a stone's throw from our warehouse?
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And what would you say if I told you that they invited us in for a
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behind-the-scenes tour? Well Linus, I'd probably say that's exactly what I was expecting,
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given the title and thumbnail of this video, stop wasting my time.
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Got it. Let's go.
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So in 2007 D-Wave introduced their first
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quantum processor. Now, with only 16 qubits,
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it wasn't especially powerful.
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But the point wasn't whether you could or couldn't solve the same problems with a pencil and a piece of paper.
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The point was that this
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scalable approach would allow them to ship the world's first commercial quantum computer the D-Wave One in
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2011 with
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128 qubits followed by 512
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1000 and
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2000 cubic designs in 2013, 2015, and 2017
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respectively. And adding more qubits is the key to increasing performance because the more qubits you have, the more
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complex the problems that you can tackle. You see quantum computing doesn't work like
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classical computing with ones and zeros where you feed it a
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question and then it spits out an
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answer. Instead a quantum processor takes all of the parameters you feed it and works on
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Every solution pointing you at one or two or maybe even more
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optimal
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Solutions. So they're not perfect for everything.
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I don't think there's a single person in this building who expects Call of Duty: Black Ops 10 to run on a D-Wave mach 5
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Quantum gaming rig or anything like that but for scheduling out of sports teams games over the course of a season
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For tackling problems like logistics climate change and Energy distribution or for conducting AI research
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These puppies right here have the potential to completely
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disrupt the existing players.
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So then let's go have a look at one shall
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we? Now there are only a handful of customers in the world who have
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Actually ponied up the price of a D-Wave system
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including high Rollers like Lockheed Martin, Los Alamos National Lab, Google, and Nasa. But D-Wave
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Themselves have a handful of their latest generation 2000
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Q systems running here at their
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headquarters that are available through the cloud just make sure that you don't turn off any of the ones with a
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delightfully Low-Tech "Online" sign zip-tied to it it might be doing very very important research. So from the outside a
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2000
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Q doesn't look that different from any other compute cluster with a few black racks and when you open up door number one
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There's not much at first glance to indicate that there's anything special about it
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You'll find a network switch, a UPS for battery backup, a normal server
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responsible for monitoring some monitoring devices that
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Wait a minute!
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seven Eight Degrees Milli
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Kelvin we're going to have to get back to that later.
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There's also a second server that takes a
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problem and translates it into machine code
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using custom room temperature
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electronics to generate high precision analog signals that it then sends to, as we promised, just about the
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coldest place in the known universe
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The single, yes, just one chip, single code named, Washington,
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quantum processor at the heart of this machine, but where exactly is it?
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It's not behind Door 2,
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or door number 3
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back there you'll find the first and second stage pumps that are used to create a vacuum around the processor to
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Thermally insulate it
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and it's cooling system from the outside world as well as a compressor for the aforementioned cooling system, and
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You also won't find it in this
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Barrel shaped
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Doodad that is actually a liquid nitrogen
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filter that removes impurities from the Coolant mixture of Helium-3 and Helium-4
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Isotopes and is one of the things that allows D-Wave systems to run for years at a time a critical feature
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Given that the chip kind of locks into a certain configuration
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Once it's supercooled and if you heat one of these puppies up back to room temperature
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it can take up to two days to cool it back down and up to four weeks to finish the the
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rebalancing or
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recalibration process. No, no, to find the actual processor,
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we have to go past this first door on the left here that handles connecting the
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all-business racks at the front to the
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giant box here that was hiding in plain sight that I'll be referring to as the "party in the back" or
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per D-Wave's gentle suggestion, the
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"shielded enclosure". This right here is effectively a big faraday cage and the first of
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sixteen layers of shielding that are designed to shield the Powerlines and
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preserve the integrity of the
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signals to and from the quantum processor to the greatest degree possible
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And that was a very intentional pun by the way now
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normally these rooms are closed and there is a series of
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casings on
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top of this apparatus here to maintain the vacuum around what is effectively the
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Motherboard of our quantum computer, but they had one open for maintenance today, so we've got to get up close and personal
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The thing is peppered with probes and sensors,
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heat exchangers, data wires,
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but the five big plates are really the main attraction here.
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Each of them represents a different stage of the cooling system
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The top one gets signals from the outside world on copper wires and runs on a frosty
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70 degrees Kelvin the next one down uses the same fridge and these braided copper
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conductors to get down to four degrees Kelvin, which is both low enough to Condense helium to a liquid and
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To switch over from Copper wires to the superconductor
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Niobium the middle plate here uses vacuum helium for to drop our signal wires to one degree
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Kelvin the Fourth uses Helium-3
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To get us to about it to a tenth of that and the final stage uses a sophisticated
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Mixture of those two isotopes to drive this entire
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Filtering and shielding apparatus as well as the processor inside
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down to its typical operating temperature of about oh point zero one five degrees Kelvin damn near
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Absolute zero
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But why does it need to be so cold?
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Niobium already super conducts at nine Degrees, Kelvin
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interstellar Space is
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3.1 degrees Kelvin our solar system is even warmer. We're talking oh point zero one five degrees Kelvin well
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this
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Superconducting chip here is what's inside there, and it's connected via four hundred
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superconducting wires
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And this is kind of like the pins on a CPU socket and what it's doing if it's using
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Quantum mechanical effects to process information.
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So for that to work,
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these effects need to be significant enough to use them for
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computation, which means that the temperature needs to be
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well below
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the energy scale of those quantum effects if it
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wasn't, then the data you'd get would be very very noisy,
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corrupted by heat related quantum effects.
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That's why the colder they can get, pretty much, the better and getting even colder in the future
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may actually be practical. So
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this generation of the waste processors consumes no power and outputs no heat
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meaning that the 20 kilowatts of power that are required to run system is just
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Dedicated to the cooling system. So unless they wanted to go colder this energy cost
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doesn't change whether you're running a hundred cubits or
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2,000 cubits, that's just the sweet spot of
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practicality and functionality
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Today and more cooling is far from the only thing on the horizon. the future's looking bright for our neighbors here at D-Wave
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they don't have a
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50-Year vision yet necessarily,
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but in the nearer term they don't really perceive anyone else in the space as a real competitor with a
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commercializable technology and with more R&D focus they think their system could be as compact as
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three or four racks and
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capable of taking on some of the hardest
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Neural Network problems that we face in the years to come and you know what?
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So thanks to D-Wave for hosting us here. Thanks to you guys for watching if you dislike this video
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You know where that button is
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but if you liked it hit the like button get subscribed, and
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maybe check out where to buy the stuff we featured at the link in the video description, okay?
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Less applicable for this video than usual, but we also have links down there to our merch store
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Which has cool shirts like this one and our community forum which you should totally join