Search found 196 matches

by Joy Christian
Mon Sep 30, 2024 12:50 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

FrediFizzx wrote: Sun Sep 29, 2024 9:58 am Sure, mathematical artifacts can exist at the same time. Qubits give you 2^n mathematical artifact "states".
That is exactly the point Mikhail Dyakonov is making. For that reason, there will never be a quantum computer --- which is the theme of this thread.
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by Joy Christian
Sun Sep 29, 2024 1:01 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

Measurement time. That is just one time at which the qubit state Psi(t) is measured. Not two different times. So up and down states do exist at the same time , just as I said. The spin system is in the qubit state, which is given by Psi(t) = a(t) x up + b(t) x down. This state Psi(t) is measured at...
by Joy Christian
Sat Sep 28, 2024 12:22 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

Measurement time. That is just one time at which the qubit state Psi(t) is measured. Not two different times. So up and down states do exist at the same time , just as I said. The spin system is in the qubit state, which is given by Psi(t) = a(t) x up + b(t) x down. This state Psi(t) is measured at...
by Joy Christian
Fri Sep 27, 2024 11:23 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

Do you have a reference for that? I don't ever recall seeing that. The qubit state is written down explicitly in Mikhail Dyakonov's talk I linked above: https://www.facebook.com/michel.dyakonov/posts/pfbid0vHdjtcPxHfDixWpfuUkRJi6jFPSAHYXWP9PfzdqGhWFRtXpzGhqyibFY9WyZxZ5Dl?rdid=7nNbG7z8gFDuL0DD That ...
by Joy Christian
Fri Sep 27, 2024 1:46 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

This is a qubit state in which up and down states exist at the same time, at least according to the quantum computing guys. Do you have a reference for that? I don't ever recall seeing that. The qubit state is written down explicitly in Mikhail Dyakonov's talk I linked above: https://www.facebook.c...
by Joy Christian
Thu Sep 26, 2024 12:38 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

So, you agree that probability waves exist as mathematical objects. Is that correct? If so, then we can have probability based superposition. Do you agree? I understand what probability is. And I understand what quantum superposition is. But what is "probability based superposition"? It i...
by Joy Christian
Wed Sep 25, 2024 1:09 pm
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

So, you agree that probability waves exist as mathematical objects. Is that correct? If so, then we can have probability based superposition. Do you agree? I understand what probability is. And I understand what quantum superposition is. But what is "probability based superposition"? .
by Joy Christian
Wed Sep 25, 2024 10:46 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

Do you believe that probability waves exist? I don't even know what "probability waves exist" means. What exists are measurement results, or clicks of detectors, or eigenvalues of Hermitian operators. I didn't mean exists as a physical object but exists as a mathematical object based on r...
by Joy Christian
Wed Sep 25, 2024 12:03 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

FrediFizzx wrote: Tue Sep 24, 2024 4:57 pm Do you believe that probability waves exist?
I don't even know what "probability waves exist" means. What exists are measurement results, or clicks of detectors, or eigenvalues of Hermitian operators.
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by Joy Christian
Sun Sep 22, 2024 10:18 pm
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

Superposition is a consequence of wave action. Classical waves can have superposition so it stands to reason that quantum probability waves could have superposition also. Ballentine is not questioning that. You are missing his explanation that the supposition principle does not violate classical pr...
by Joy Christian
Sun Sep 22, 2024 12:10 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

Superposition is a consequence of wave action. Classical waves can have superposition so it stands to reason that quantum probability waves could have superposition also. Ballentine is not questioning that. You are missing his explanation that the supposition principle does not violate classical pr...
by Joy Christian
Thu Sep 19, 2024 5:59 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

Interesting paper but I don't see how VI.A disproves number 1. What am I missing? Number 1 claim is that two slits interference pattern can only be explained if each particle is in a superposition of passing through slits simultaneously. In other words, the claim of 1 is that classical probability ...
by Joy Christian
Tue Sep 17, 2024 1:40 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

The existence of quantum superposition is supported by several key experiments and theoretical principles in quantum mechanics. Here are a few notable examples: 1. **Double-Slit Experiment**: This classic experiment demonstrates the wave-particle duality of particles like electrons and photons. Whe...
by Joy Christian
Sat Sep 14, 2024 10:58 pm
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

FrediFizzx wrote: Sat Sep 14, 2024 4:47 pm Is there any proof that superposition doesn't exist? That seems to be the difference.
No.

Neither is there an observationally direct proof that superposition exists.
.
by Joy Christian
Sat Sep 14, 2024 2:25 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

. The lure of "quantum computers" is one of the most lucrative scams, with scammers well placed in both academia and the industry of quantum technology. These scammers are earning millions in prizes and salaries. But here is a rare talk by Mikhail Dyakonov that debunks all the hype about ...
by Joy Christian
Thu Sep 12, 2024 7:46 am
Forum: Sci.Physics.Foundations
Topic: Quantum Computers are doomed all over again!
Replies: 44
Views: 49516

Re: Quantum Computers are doomed all over again!

. The lure of "quantum computers" is one of the most lucrative scams, with scammers well placed in both academia and the industry of quantum technology. These scammers are earning millions in prizes and salaries. But here is a rare talk by Mikhail Dyakonov that debunks all the hype about q...
by Joy Christian
Tue Sep 03, 2024 8:11 pm
Forum: Sci.Physics.Foundations
Topic: Sign mistake in the GHZ variant of Bell's theorem
Replies: 24
Views: 18365

Re: Sign mistake in the GHZ variant of Bell's theorem

Sorry, lambda can't be anything. It can't be a "factor that is accounted for in the standard quantum mechanics framework." So, not really a precise mathematical definition. As I said, lambda can be anything you like. ... And that would be manifestly wrong! I think we found your problem. ....
by Joy Christian
Tue Sep 03, 2024 1:55 pm
Forum: Sci.Physics.Foundations
Topic: Sign mistake in the GHZ variant of Bell's theorem
Replies: 24
Views: 18365

Re: Sign mistake in the GHZ variant of Bell's theorem

Sorry, lambda can't be anything. It can't be a "factor that is accounted for in the standard quantum mechanics framework." So, not really a precise mathematical definition. As I said, lambda can be anything you like. Its formal role is precisely defined in my paper and has been well under...
by Joy Christian
Tue Sep 03, 2024 11:03 am
Forum: Sci.Physics.Foundations
Topic: Sign mistake in the GHZ variant of Bell's theorem
Replies: 24
Views: 18365

Re: Sign mistake in the GHZ variant of Bell's theorem

"In quantum physics, a **hidden variable** refers to an underlying deterministic factor that is not accounted for in the standard quantum mechanics framework. The idea is that the probabilistic nature of quantum mechanics could be explained by these hidden variables, which determine the outcom...
by Joy Christian
Mon Sep 02, 2024 2:36 pm
Forum: Sci.Physics.Foundations
Topic: Sign mistake in the GHZ variant of Bell's theorem
Replies: 24
Views: 18365

Re: Sign mistake in the GHZ variant of Bell's theorem

"In quantum physics, a **hidden variable** refers to an underlying deterministic factor that is not accounted for in the standard quantum mechanics framework. The idea is that the probabilistic nature of quantum mechanics could be explained by these hidden variables, which determine the outcom...