Simple quantum entanglement qustion

In summary, the conversation discusses the concept of entangled particles and whether information can be transmitted faster than light using this phenomenon. It is explained that while the light bulb may indicate a result at the observing end, it does not actually transmit any information. Additionally, the idea of cloning particles is mentioned, but it is noted that the no cloning theorem prohibits this method.
  • #1
simkhovich
2
0
i do not posses deep knowledge of Quantum physics nor regular physics for that mater novice at best. so i have a idea say you have 2 entangled particles separated by say 5 light years by the idea when you observe them you will get result X and the opposite on the second particle so Y. soo if you set a light bulb to go off if the result from observing the entangled particle is X, and if both sides separated by 5 light years observe the particles and side A gets Y then side B will automatically get X and the light bulb will go off resulting is side A knowing the bulb went off so wouldn't that mean information traveled faster then light. sorry for the confusion
 
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  • #2
You can know that the light bulb is off, but you did not transmit information with that - you just followed instructions decided in advance. Try to send an email with that method - it cannot work.
 
  • #3
but the results from observing the particle can go in 1 of 2 ways so you can't know ether the light bulb is off or not until you observe the particles resulting in you gaining knowledge what is on the other side of the 5 light year distance
 
  • #4
simkhovich said:
but the results from observing the particle can go in 1 of 2 ways so you can't know ether the light bulb is off or not until you observe the particles resulting in you gaining knowledge what is on the other side of the 5 light year distance

There has been some previous discussion of this idea - try this thread: https://www.physicsforums.com/showthread.php?t=675398&highlight=Entanglement and look for the replies from the science advisors.
 
  • #5
simkhovich said:
but the results from observing the particle can go in 1 of 2 ways so you can't know ether the light bulb is off or not until you observe the particles resulting in you gaining knowledge what is on the other side of the 5 light year distance

In order to send information you need control of what's at the sending end. When you observe one particle at the sending end its 50-50 what it is - you have no idea what it is. The other end its the opposite but since the sender had no idea what it was the receiver can't infer anything from it.

Some bright spark came up with a way around it by cloning a particle. It led to the development of the no cloning theorem - so you can't do it - at least that way:
http://en.wikipedia.org/wiki/No-cloning_theorem

Thanks
Bill
 

Related to Simple quantum entanglement qustion

What is quantum entanglement?

Quantum entanglement is a phenomenon in which two or more particles become connected in such a way that the state of one particle cannot be described without considering the state of the other(s). This connection exists even if the particles are separated by large distances.

How does quantum entanglement work?

Quantum entanglement occurs when two particles interact in such a way that their states become correlated. This means that the state of one particle cannot be determined without also determining the state of the other particle. This correlation exists even if the particles are separated by large distances, and it is not affected by any external factors or disturbances.

What is the significance of quantum entanglement?

Quantum entanglement is significant because it challenges our understanding of how particles behave and interact. It also has potential applications in fields such as quantum computing, cryptography, and communication. Additionally, it has been a subject of interest in the study of the fundamental principles of quantum mechanics.

Can quantum entanglement be observed or measured?

Quantum entanglement cannot be observed or measured directly because it is a phenomenon that occurs at the quantum level and cannot be observed with our current technology. However, its effects can be observed through experiments and measurements of correlated states of entangled particles.

Is quantum entanglement instantaneous?

While it may seem like quantum entanglement allows for instantaneous communication between entangled particles, it does not violate the speed of light. The information about the state of one particle cannot be used to transmit information faster than the speed of light to the other particle. This is due to the fact that the act of measuring one particle's state will affect the other particle's state, but the information cannot be used to communicate any faster than the speed of light.

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