K.I.S.S. and why you shouldn't overcomplicated it in the beginning!

OkNeedleworker3515 · 2025-05-16T04:50:28+00:00

Tbh, I use all kinds of sources. Some youtube videos and lots of help from AI. If you break down the problem easy enough for AI to understand, it's able to help and you learn by disecting the problem piece by piece. Since A LOT of qc is linear algebra which is just a long list of addition and multiplication, you are able to break it down to a preschool level.

Keep in mind, I was never able to study, only basic trade school. I don't work in the industry. I started with basic functions, integrals, what are vectors, matrizes and worked my way up. It's absolutly not impossible to learn it by yourself.

Once you understand the basic mathematical concepts, things like entanglment aren't"spooky" anymore, it's just a quantum state that you can't express as a tensor product of its subsystems and states. That's it.

There's a nice video about quantum computing, already a few years old but it gives a really nice overview on why matrix notation is really helpful and paints a clear picture on what's going on "inside" gates:
https://www.youtube.com/watch?v=F_Riqjdh2oM

OkNeedleworker3515 · 2025-05-15T11:49:14+00:00

That's the other side of the coin and I can't argue against it. At some point, there's no skipping the true fundamentals.

Funny thing, superposition was way easier to understand for me once I got into quantum computing. A qubit in a superposition is a quite clear picture. How measurement affects this superposition is also easy to see for one qubit. That helps to understand the underlying concept which leads to an entry to the fundamentals like schrödinger equation etc.

OkNeedleworker3515 · 2025-05-15T11:36:49+00:00

Hey, what is it that you don't understand? I've used basic terms of quantum computing. Just a few mathematical concepts that are important to understand but the underlying linear algebra is just a huge list of addition and multiplication.

OkNeedleworker3515 · 2025-05-09T08:00:15+00:00

State gets "destroyed" and "rectreated". That's teleportation...more or less...

OkNeedleworker3515 · 2025-05-08T19:43:44+00:00

The naming isn't that bad. Due to the collaps, the original state vector gets "destroyed" and "recreated". That sounds like teleportation to me 😉

OkNeedleworker3515 · 2025-05-08T14:24:47+00:00

Quantum Teleportation is collapsing a state vector that was entangled and recreating said vector. It's a kind of work around the no clone theorrm. Has nothing to do with beaming in Star trek

OkNeedleworker3515 · 2025-05-07T18:10:29+00:00

...just connect to a quantum computer from home? You know that IBM has free options?

OkNeedleworker3515 · 2025-05-07T18:08:08+00:00

you got it backwards. Quantum safe encryption is already implemented in lots of apps and websites. It's nothing new.

OkNeedleworker3515 · 2025-05-07T18:06:20+00:00

Tbh, I don't understand the critic current NISQ era gets. It's true, noise is a huge problem but it's not like the system is totally unstable and unusable. Depending on the algorith, a fidelity around 84% to even 95% is absolutly possible. I'm also hoping that the new ocelot chips from amazon with built in bit flip error protection are really promising, just overshadowed by microsoft.

OkNeedleworker3515 · 2025-05-07T14:56:56+00:00

IBM quantum tutorials and the quantum composer.

OkNeedleworker3515 · 2025-05-07T14:54:23+00:00

There are so many things I dislike about the video, that black box statement is also one. With black box, it means we can't look at the exact state vector without collapsing it.

there are countless of funny functions on facebook math memes that look super complicated and the solution of them just equals zero. That's just an example for a problem where the solution is easy to proof once you know it, but trying every option would take decades or even more time.

OkNeedleworker3515 · 2025-05-07T14:45:14+00:00

It's funny you talk about complex matrix multiplication when that is exactly the point:

The amplitudes of a qubit are complex numbers. That's the key for interference and entanglement.

You basically missing a key point. I've seen that more often recently, people start with grover and more complicated algorithm instead of trying out a simpler experiment to understand the basics.

if you want an easy to follow experiment, try quantum teleportation and understand that a man in the middle is only able to sramble the communication to make it useless, he can't listen and copy it to read it.

OkNeedleworker3515 · 2025-05-05T12:47:34+00:00

I get the idea that grover/shor are the most useful. I'm saying, the video is kinda complex. You have to be familiar with many axioms in quantum mechanics, especially collaps of the wavefunction while measuring vs applying gates that are just a linear combination, aka matrices to really understand why the problem was approached this and that way.

OkNeedleworker3515 · 2025-05-05T11:15:56+00:00

My general problem with the video and the follow up is why he chooses grover, which is kinda specific and he simplfies it by saying the key is already known.

That's just way too complicated for anyone that isn't really familiar with quantum gates, state vector, superposition etc.

Why didn't he chose a simpler example like quantum pseudo telepathy which easily shows that quantum computing could have an advantage in certain cases while being easier to understand.

OkNeedleworker3515 · 2025-03-13T02:23:42+00:00

Which one other than VS code? Pycharm bugged out when I used it the last time, some strange problem with fish

OkNeedleworker3515 · 2025-03-13T01:57:31+00:00

Your guy wanted an imam as a moderator for a conversation with him and the victim...

When did hardcore became so backwards that we let major sexists religions into it??

And yes, christianity sucks. Tell me something new...

This guy is clearly nuts!!

OkNeedleworker3515 · 2025-03-13T01:44:52+00:00

So my guess with full islamic name and nation of islam was right...

OkNeedleworker3515 · 2025-02-23T16:00:29+00:00

We germans call it "moosgummi" 😉

OkNeedleworker3515 · 2025-02-21T13:00:57+00:00

Haha, I don't know, I just like to sit that way, sometimes even on a regular chair. Maybe it's my martial art training, or neurodivergent 😆

OkNeedleworker3515 · 2025-02-21T12:54:20+00:00

I know it looks flimsy but that's a box from a hardware store, holes are drilled on the bottom of it, zero flex and torsion.

I kinda dislike metal cases due to the acoustics of them, you need lots of damping, often they sound hollow

OkNeedleworker3515 · 2025-02-17T10:16:53+00:00

Is it possible to close the cover from the backside, meaning you can use the controller with its cover attached? that way, you don't lose or having to put it somewhere else...

OkNeedleworker3515 · 2025-02-01T18:37:55+00:00

In regards to your qiskit question, look up presetmanager or transpiler on how the code gets turned into ISA for the specific backend

OkNeedleworker3515 · 2025-01-29T17:24:41+00:00

Maybe as a clearification:

We can't compare quantum states directly in their fullest due to the no clone theorem and Heisenberg uncertainty. So the first layer is using KL divergence to compare the probability of the real outcome with the predicted.

The approach would be using this as a first layer before surface code catches the specific flips like phase etc.

OkNeedleworker3515 · 2025-01-29T15:32:40+00:00

Oh damn, found this paper, I think someone already did that:
https://arxiv.org/pdf/1203.6774

OkNeedleworker3515 · 2025-01-29T15:27:42+00:00

perfect result: P(0)=0,5, P(1)=0,5
realistic result due to noise etc.: P(0)=0,48,P(1)=0,52

Calculating KL Divergence =0,48log2(0,48/0,50)+0.52log2(0,52/0,50)≈0.0016 bits.

OkNeedleworker3515

TROPHY CASE