i'm not sure they know what teleportation means, it's like saying a radio signal "teleports" a voice around.
Yale researchers 'teleport' a quantum gate
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Re: Yale researchers 'teleport' a quantum gate
#22can anyone ELI5 what's the impact of this research?
It's a huge step for building the next generation of computers. Imagine you want to listen to your favorite music in a very busy street with lots of cars and people without headphones. Not very enjoyable. These guys figured out a way to suppress all noise with a special headphone. They move the information from your phone directly to your ears. That's obvious for you I suppose, but it was really hard to do that on vert very small scales these computers operate on.
Re: Yale researchers 'teleport' a quantum gate
#23The article mentions that quantum computers are “an order of magnitude” faster than traditional computing. My understanding is that at the moment, this is incorrect: (noise-free) quantum computers are better at certain specific tasks, and otherwise, are no better than classical computers.
The "order of magnitude" statement is completely false. If we're talking about algorithmic complexity: for some algorithms quantum computers won't be any better than classical ones; for others, the improvement will be exponential, not multiplicative, say from O(eⁿ) to O(n). If we're talking about actual performance, we have no idea, because there is no general purpose quantum computer yet. So the mention of "orders o…
Just FYI you're misusing "belies". You use it like "reveals" but it's meaning is closer to the opposite, more like "misrepresents" or "contradicts".
Re: Yale researchers 'teleport' a quantum gate
#24I'm looking forward to the first quantum computer with hundreds or thousands of qubits, to see how the Many Worlds deniers explain its existence.
(Disclaimer: I am not a physicist) Probably they would just explain it with the normal Copenhagen interpretation? https://en.wikipedia.org/wiki/Copenhagen_interpretation In terms of quantum theory, the behaviour of a quantum computer is not fundamentally any different to the behaviour of any small scale particle or collection of particles. Even buckyballs have been shown to self-interfere in a double-slit experiment,…
They've gotten it a little bit bigger than a buckyball
https://arxiv.org/abs/1310.8343
Also what's cool is that these things are visible under an electron microscope (so are buckyballs iirc).
Re: Yale researchers 'teleport' a quantum gate
#25The article mentions that quantum computers are “an order of magnitude” faster than traditional computing. My understanding is that at the moment, this is incorrect: (noise-free) quantum computers are better at certain specific tasks, and otherwise, are no better than classical computers.
The article: > Fully useful quantum computers have the potential to reach computation speeds that are orders of magnitude faster than today’s supercomputers. It's not talking about the present, where IIUC quantum computers are basically useless for anything but research, not performing as well as classical computers because of noise and shortage of qubits.
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Re: Yale researchers 'teleport' a quantum gate
#26Earlier quoted context omitted.
On Hacker News everybody's five year old kids: 1. Configure and run their own Minecraft Server 2. Are fully proficient with the linux commandline 3. Are skilled in basic safe cracking techniques such as auto-dialling, weak point drilling, scoping and the use of brute force methodologies including the use of thermal lances (having acquired relevant Health and Safety accreditations).
And besides that they are on their third startup, have a blog, will debate the finer points of faking it until you make it with gusto, and are proficient in LISP, Rust and Elixir.
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Re: Yale researchers 'teleport' a quantum gate
#27Earlier quoted context omitted.
Quantum computers will likely be hybridized with classical computers, meaning classical computers will just become really good at processing quantum algorithms as well. It really wouldn’t make sense to have a purely classical or purely quantum computer at the point where both technologies are available.
I can imagine that once (if?) the technology becomes miniaturised enough, we'd end up with a "quantum card" alongside our sound and graphics cards, for specialised processing.
They seem to be costly enough to keep within temperature constraints that what that might actually look like is a quantum room at AWS or whoever that costs $x/hr to access.
Re: Yale researchers 'teleport' a quantum gate
#28I'm looking forward to the first quantum computer with hundreds or thousands of qubits, to see how the Many Worlds deniers explain its existence.
Excuse me? Collapse theories have a problem with large quantum systems. Many-World is fine.
Re: Yale researchers 'teleport' a quantum gate
#29Earlier quoted context omitted.
Which is why we got them in the first place! Failure to contain I mean.
So did any of these five year olds notice this sentence? > Using a theoretical protocol developed in the 1990s, Yale researchers experimentally demonstrated a quantum operation, or “gate,” without relying on any direct interaction. They're basically saying it's magic. But no 5 year olds I hang out with are any good at magic yet.
Quantum teleportation is the transmission of a quantum state using an entangled pair and two classical bits. No magic needed.
Re: Yale researchers 'teleport' a quantum gate
#30I'm looking forward to the first quantum computer with hundreds or thousands of qubits, to see how the Many Worlds deniers explain its existence.
Excuse me? Collapse theories have a problem with large quantum systems. Many-World is fine.
Exactly my point. Collapse theories, in addition to the shady concept of "measurement", have a problem scaling to large systems. Many Worlds, or Decoherence, makes perfectly sense with any sized system.