Can Signals Be Transmitted Faster Than Light Using Quantum Entanglement?

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SUMMARY

The discussion centers on a proposed method and apparatus for transmitting signals faster than light using quantum entanglement, specifically through a setup involving two interacting spin ½ photons and double-slit experiments. The concept suggests that by manipulating measurement devices placed in front of double slits, one can control interference patterns observed on distant screens, effectively sending signals at speeds exceeding that of light. Key references include the delayed choice quantum eraser experiment, which illustrates how interference patterns can emerge or disappear based on measurement choices. The feasibility of this method remains contentious, with participants debating the implications of photon behavior and the necessity of interference patterns.

PREREQUISITES
  • Quantum Mechanics fundamentals
  • Understanding of Quantum Entanglement
  • Familiarity with Double-Slit Experiment
  • Knowledge of Delayed Choice Quantum Eraser experiment
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  • Research "Quantum Entanglement and Communication" for deeper insights
  • Study "Delayed Choice Quantum Eraser Experiment" for practical applications
  • Explore "Quantum Measurement Theory" to understand measurement impacts on quantum systems
  • Investigate "Quantum Information Theory" for implications on signal transmission
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Physicists, quantum mechanics researchers, and anyone interested in the theoretical implications of faster-than-light communication through quantum entanglement.

  • #31
I wanted to know more about the spin-1/2 photons. I was getting entangled.

Carl
 
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  • #32
I posted this in a similar thread - but what about...

I just can't get past this...

if we use entangled pairs (and a continuous stream of them - orginating from the midpoint between the 2 communicators), all we need to do is have Alice wipe out (with a black absorber - shutter apparatus) a pair.

Bob then see's these 'holes' in the regular stream - which can then be translated to binary - hence comunication.

Please tell my why spin's etc even need to played around with - if an entangled pair is really the SAME particle/photon - then it's enough to wipe one out to communicate...

:)

Tell me I'm a Genius - or show me the error of my way?
 
  • #33
lov said:
if we use entangled pairs (and a continuous stream of them - orginating from the midpoint between the 2 communicators), all we need to do is have Alice wipe out (with a black absorber - shutter apparatus) a pair.
What do you mean "wipe out"? Are you suggesting that if one member of an entangled pair is absorbed by an atom, the other will just disappear? That's not how entanglement works.
lov said:
Please tell my why spin's etc even need to played around with - if an entangled pair is really the SAME particle/photon - then it's enough to wipe one out to communicate...
Who told you that an entangled pair is "really the same photon"?
 
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