Trying to understand quantum physics questions

[Shrek]

Still... the particle goes through both slits at the same time and equally to the moon and back is a bit hard to grasp, even for a kid.

 

[mtcn77]

Quantum physics is simple in that there is determinism, yet we live above the quantum plane so things we can see and observe are above the 'finite scale' of interactions. What we observe contains an error, remainder, that changes our observation from the outcome we wish to examine.
Electrons for instance have both a finite and 'infinite phase' that changes according to deterministic principles, yet being unable to observe it with super quantum energy particles limit our understanding of its second orbital phase which completely limit our super quantum understanding of its behaviour. Microwave sampling gets us a better understanding since each interaction doesn't result in a jump to the invisible orbital. It behaves more predictably as we develop its probability trajectory better.

 

[Shrek]

Quantum theory as currently understood is NOT deterministic.

 

[mtcn77]

It is, unless you want to live in the old high energy photon experiments scale.
-We have moved into the infra quantum observable universe!
PS: the poster above is complaining about the untraceability of the electron's dark orbital - which is very experimentable with sub-photonic experiments.

 

[bug]

Still... the particle goes through both slits at the same time and equally to the moon and back is a bit hard to grasp, even for a kid.

I would think it would be more obvious kids don't understand statistics at the age they start learning about physics

And I don't want to open a(nother) can of worms, but as the current pandemic has shown us, most grown adults have a hard time grasping basic statistics, too.

 

[AlwaysHope]

Not sure if this is the right thread for this news but UNSW researchers have apparently made a breakthrough with quantum computing in so much that they now have achieved a result demonstrating near error free quantum computing that will of course pave the way for large scale real world uses.

 

[bug]

Not sure if this is the right thread for this news but UNSW researchers have apparently made a breakthrough with quantum computing in so much that they now have achieved a result demonstrating near error free quantum computing that will of course pave the way for large scale real world uses.

Ha, I've come across that site a few times. never had the time to check if it's quality or just click bait.

Also, while 99% error free is a (huge?) step in the right direction, we still don't know what to do with a quantum computer when we build it. We hope it will help us crack NP complete problems, but I don't anyone has figured out how just yet. In part, probably because the solution depends on the computer we build...

 

[Shrek]

It is my opinion that quantum error correction cannot be mastered.

We know how to correct one qubit, and I have no doubt we can protect 2, 3 etc; but we don't know how to protect the qubits protecting that one.

Actually, we do... the quantum Zeno effect can be used to protect any number of qubits from most any environment; but still we will fail as we cannot protect a calculation.

Quantum Bit Error Avoidance (scirp.org)

 

[lexluthermiester]

Not sure if this is the right thread for this news but UNSW researchers have apparently made a breakthrough with quantum computing in so much that they now have achieved a result demonstrating near error free quantum computing that will of course pave the way for large scale real world uses.

Now if we can get it down to, or close too, room temps it will really be something.

we still don't know what to do with a quantum computer when we build it.

Nonsense. Quantum computers with a sufficient number of qbits can be used to do genetic analysis, molecular & atomic modeling and much, much more. For example and what I'm excited for, is to run a model of the Big Bang. A 1024qbit quantum computer can do in hours with a small fraction of the power what would take a traditional super computer months to complete.

 

[AlwaysHope]

Ha, I've come across that site a few times. never had the time to check if it's quality or just click bait.

Also, while 99% error free is a (huge?) step in the right direction, we still don't know what to do with a quantum computer when we build it. We hope it will help us crack NP complete problems, but I don't anyone has figured out how just yet. In part, probably because the solution depends on the computer we build...

The report was listed in other media outlets as well... are they ALL click bait?? cynicism has its limits imo.
But here you go, straight from the horses mouth so to speak.

 

[oobymach]

Not sure if its been mentioned we filmed a light photon hitting a prism and becoming 2 light photons.

Can't find the original this one is much cruder and blurrier but shows basically the same thing.

At 10 trillion frames per second, this camera captures light in slow motion | TechCrunch

Light is the fastest thing in the universe, so trying to catch it on the move is necessarily something of a challenge. We've had some success, but a new rig built by Caltech scientists pulls down a mind-boggling 10 trillion frames per second, meaning it can capture light as it travels along —...

techcrunch.com

Physicists Just Captured The First-Ever Footage of a Molecule's Spectacular Rotation

Imagine trying to film an event that was over and done within a mere 125 trillionths of a second.

www.sciencealert.com

 

[Shrek]

Not sure if its been mentioned we filmed a light photon hitting a prism and becoming 2 light photons.

How can one photon become two? (without non-linear optics)

 

[lexluthermiester]

How can one photon become two? (without non-linear optics)

It's energy state is divided in half and one part goes in one direction and the other part goes off in another direction.

 

[oobymach]

How can one photon become two? (without non-linear optics)

Not sure how the physics exactly work but the wavelength hits the prism flat and comes out at 2 different angles and the 2 look identical to the one going in which looks like a white 2d square that is flat on the front and back and the sides wiggle as it progresses forward.

I wish I bookmarked it because I can't find it now.

Found this while digging though, we can create matter with lasers.

Collisions of Light Produce Matter/Antimatter from Pure Energy

Scientists studying particle collisions at the Relativistic Heavy Ion Collider have produced definitive evidence for two physics phenomena predicted more than 80 years ago: that matter/antimatter can be created directly by colliding photons and that a magnetic field can bend polarized light...

www.eurekalert.org

 

[bug]

The report was listed in other media outlets as well... are they ALL click bait?? cynicism has its limits imo.
But here you go, straight from the horses mouth so to speak.

I didn't say it was click bait, I said I didn't have the time to look it up. And yes, I have noticed this particular piece was published in Nature.

 

[Shrek]

It's energy state is divided in half and one part goes in one direction and the other part goes off in another direction.

The wave function splits, but the photon is found in one or other of the two paths.

 

[Space Lynx]

Not sure if this is the right thread for this news but UNSW researchers have apparently made a breakthrough with quantum computing in so much that they now have achieved a result demonstrating near error free quantum computing that will of course pave the way for large scale real world uses.

Personally I think this means cryptocurrency days are numbered, once quantum computing gets more and more software over time, governments will be able to utilize that horsepower to crack and destroy SHA-256 and other security features that Crypto relies upon.

 

[The King]

Personally I think this means cryptocurrency days are numbered, once quantum computing gets more and more software over time, governments will be able to utilize that horsepower to crack and destroy SHA-256 and other security features that Crypto relies upon.

Seems that will be the end of most security encryption that is currently being used today not just Crypto which minuscule in the grand scheme of things that uses encryption.

 

[Shrek]

Quantum cryptography is already in commercial use.

 

[lexluthermiester]

The wave function splits, but the photon is found in one or other of the two paths.

You're talking about a quantum theoretical principle that is unverified. Their descriptive equations have no proofs. I'm talking about a known photon physics principle. When a photon is split, like every other form of matter, it is split into a fraction of the original photon. The energy state of the resulting photons is conserved. The resulting photons are not identical to the original photon but have a fraction of the original photon energy. Photons do not always split equally either. However, the sum energy and mass of the divided photons will still equal the energy and mass of the original photon.

 

[Shrek]

The resulting photons are not identical to the original photon but have a fraction of the original photon energy. Photons do not always split equally either. However, the sum energy and mass of the divided photons will still equal the energy and mass of the original photon.

If so, then the color of the resulting photons would be different from the entering photon.
Planck relation - Wikipedia

Just discussing, not trying to annoy.

 

[R-T-B]

Personally I think this means cryptocurrency days are numbered, once quantum computing gets more and more software over time, governments will be able to utilize that horsepower to crack and destroy SHA-256 and other security features that Crypto relies upon.

So they hardfork to something quantum resiliant. That wouldn't even be hard...

 

[lexluthermiester]

If so, then the color of the resulting photons would be different from the entering photon.
Planck relation - Wikipedia

Just discussing, not trying to annoy.

Oh am I ever not being roped into that debate. No offense.

 

[The King]

So they hardfork to something quantum resiliant. That wouldn't even be hard...

Yes, I'm sure they can switch to quantum resistant crypto which is already a thing.

Introducing quantum-resistant cryptocurrency, the Crown Sovereign (CSOV), listing on FMFW Exchange Oct. 5, 2021

The Crown Sovereign (CSOV) is a cryptocurrency resistant to encryption vulnerabilities presented by quantum computing, ensuring future-proof protection of user data and token value. CSOV will be the first listing on FMFW Exchange, which is the rebranded name of Bitcoin.com Exchange, on Oct. 5

cointelegraph.com

 

[AlwaysHope]

Interesting that quantum computer research at UNSW is part funded by the US military.