11 replies to this topic

[Roh234]

http://www.msnbc.msn...ment-disturbed/


Maybe in the future we can attrbute a certian spin as 0 and another spin as 1. Therefore you have a binary system. You would then have a computer that would enterprut the spin and display it as text.

If we could entagle 16 pairs and control their spin we could have a true instant communication system.

We would have 8 pairs. The first particle of each pair would be as input at Location A. The other particle of the pair would be the output of Location A located at Location B. Then vice versa there fore you would need 16 pairs for a basic text conversation.

I can see this viable for distances past 1 light week and will probably be in use the mid-22nd centuary.

[truthiness]

Wow... that's an interesting idea....

Would it be technically possible using this type of technology to relay messages to the past by sending an "instant message" somewhere a light-week away, and then sending back? Would we get the message 2 weeks earlier than when we sent it? I know it sounds crazy, but if not, why not?

[Roh234]

The would be truly instanteous just like sending a text message. I could stand on the other side of the galaxy and the communication would remain immediate.

[Logically Irrational]

This could make the expansion into outer space a lot more rapid, since communication would no longer be an issue. People should start looking into that idea.

[sirhotalot]

I think you guys need to study a bit more on quantum mechanics and how it works in regards to computing.

http://en.wikipedia....antum_computing

"A classical computer has a memory made up of bits, where each bit represents either a one or a zero. A quantum computer maintains a sequence of qubits. A single qubit can represent a one, a zero, or, crucially, any quantum superposition of these; moreover, a pair of qubits can be in any quantum superposition of 4 states, and three qubits in any superposition of 8. In general a quantum computer with n qubits can be in an arbitrary superposition of up to 2ⁿ different states simultaneously (this compares to a normal computer that can only be in one of these 2ⁿ states at any one time). A quantum computer operates by manipulating those qubits with a fixed sequence of quantum logic gates. The sequence of gates to be applied is called a quantum algorithm."

[Roh234]

I was thinking of using quantam entanglement not quantam computing......

[Unrequited Lust]

You cannot send useful information through quantum entanglement.

[Roh234]

Maybe we can cause an increase in vibration of one particle and the other particle will also vibrate.

I'm saying that if one particle vibrates faster, the spin or any other property will not matter. We can still get a 0 or 1 function.

0 = low amount of useless information
1= high amount of useless information

I'm no expert in quantam physics but wouldn't this system work no matter how the information is sent the quantity of information remains the same. And we can assign 0 and 1 values to the quantities.

[sirhotalot]

Maybe we can cause an increase in vibration of one particle and the other particle will also vibrate.

I'm saying that if one particle vibrates faster, the spin or any other property will not matter. We can still get a 0 or 1 function.

0 = low amount of useless information
1= high amount of useless information

I'm no expert in quantam physics but wouldn't this system work no matter how the information is sent the quantity of information remains the same. And we can assign 0 and 1 values to the quantities.

No: http://en.wikipedia....perdense_coding

It's very fragile and requires both systems to be entangled. The devices also have to be connected (like through network cables or the internet). Because of this limitation the data transfer isn't instantaneous.

http://en.wikipedia....of_entanglement

http://en.wikipedia....m_teleportation

"1. An EPR pair is generated and distributed to two separate locations, A and B.
2. At location A, a Bell measurement of the EPR pair qubit and the qubit to be teleported (for example, quantum state of a photon) is performed, yielding two classical bits of information. Both qubits are destroyed.
3. Using the classical channel, the two bits are sent from A to B. (This is the only potentially time-consuming step, due to speed-of-light considerations.)
4. At location B, the EPR pair qubit is modified (if necessary), using the two bits to select the correct one of four possible quantum states. A qubit identical to that chosen for teleportation (for example, quantum state of a photon) results"

Essentially they cheat. They send the information through quantum entanglement but then the information is scrambled so they have to send the information the classic way so that it can be unscrambled. It's useless except maybe as a form of cryptography.

[Zeitgeist123]

but at the present moment, i dont see any relevance with faster than light instant messaging and the few microseconds delay instant messaging that we currently have..

...unless we succesfully terraform the moon or mars first.

[Caiman]

I know it sounds crazy, but if not, why not?

Allowing us to send information to the past would break causality, I would have thought that is reason enough.

[Craven]

http://io9.com/58465...change-the-past and here's neat illustration of why it would break causality Caiman mentioned.