Quantum Computing

[perceptualChaos]

I wrote an article on this topic for Craccum issue 2, its been confirmed that it will in fact appear in craccum issue 4 coming out on Monday! Check it... I could link you to an online copy but wouldn't it be so much cooler reading it in print?

[kritical]

hmm how about we save the trees and you give us a link

[perceptualChaos]

Alright, you asked for it, here's your exclusive preview

[Nato]

Sweet, that was actually really interesting. :clap:

[kritical]

Great read,

 

In your article you write about quantum computing being used to crack encryption, have you done much research on encryption which uses the laws of quantum physics to secrure information?

 

Consequently, whereas a set of 8 bits can only be in one of 256 states, 8 qubits can be in all 256 possible states at the same time

 

The qubit sounds amazing

[perceptualChaos]

nah I haven't done any real research on quantum cryptography but I have a good article on it from scientific american that you'd probably be interested in. I'll put it on my server (don't want to link to my server here but if anyone else wants a copy just PM me)

[Dapht1]

Two electrons are put into a given quantum state where they can either both be in the ‘spin up’ state or both be in the ‘spin down’ state. If these particles are now separated by astronomical distances and one of them is measured to be ‘spin up’ then the other one will instantaneously be changed to ‘spin up’ as well. Many people find it either disturbing or exciting that the particles can ‘know’ about each other without exchanging any information, however, it should be noted that for technical reasons, this effect cannot be used to send information faster than the speed of the light.

 

Sounds a bit mystical

 

Is the jist that two electrons are 'split' from the same atom and still effected by actions to the other or 'twin'..? Just been reading about experiments in which a recorded experiment using lo-fi random number generation is influenced by its current observers intension // next level observer effect perhaps..?

 

Dope artical,, keep us updated bro

[perceptualChaos]

umm sort of, doesn't have to be electrons and they don't have to come from atoms but the part about them knowing about each other is right... The usual example is photon polarizations...

 

Actually creating entangled particles is another story, its a pretty tricky buisiness... it would kinda happen naturally in a quantum computer though as the computation evolved you would get entangled states, don't want to confuse you (or myself) though

[Known One]

"Two electrons are put into a given quantum state where they can either both be in the ‘spin up’ state or both be in the ‘spin down’ state. If these particles are now separated by astronomical distances and one of them is measured to be ‘spin up’ then the other one will instantaneously be changed to ‘spin up’ as well.

 

Many people find it either disturbing or exciting that the particles can ‘know’ about each other without exchanging any information, however, it should be noted that for technical reasons, this effect cannot be used to send information faster than the speed of the light."

 

Technical reasons?

 

Too hard to change the state of an electron?

 

Too hard to measure state?

[perceptualChaos]

nah technical meant too technical for the average university student rather than cause of technology. Its impossible to transmit information faster than the speed of light cause if you have particle A and particle B in a maximally entangled state and you seperate them by astronomical distances then you measure one of them (particle B say) forcing it into a known state then in order for you to transfer information you need to find out what happened to particle A which requires a classical communication channel between the two particles such as radio waves or something which travels at the speed of light.