Reverse Entanglement: Theoretical Possibilities and Energy Conservation

In summary, the conversation discusses the possibility of combining two entangled photons back into one photon by striking them on a crystal. However, it is noted that this process is already possible through up conversion, where two photons can create a third one with the same energy. The concept of reverse entanglement is also brought up, but it is unclear how entanglement would play a role in this process.
  • #1
San K
911
1
Two entangled photons are created via, say SPDC, by striking a single photon on a crystal.

The two entangled photons have a combined energy equal to that of the original photon.

Can we, at least theoretically, combine the two photons (say by having the two entangled photons simultaneously strike at a same point in time-space on a crytal or something) back into one photon? (with the whole process obviously obeying the law of conservation of energy)

Sort of a "reverse" entanglement...
 
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  • #2
Are you just talking about up conversion?

It is a known process that you can combine two photons (often from the same source) to create a third one with energy equal to the sum of the two. This would be a probabilistic event via an atomic state. I'm not sure exactly where you imagine the entanglement coming in? What role would it play?
 
  • #3
Zarqon said:
Are you just talking about up conversion?

It is a known process that you can combine two photons (often from the same source) to create a third one with energy equal to the sum of the two. This would be a probabilistic event via an atomic state. I'm not sure exactly where you imagine the entanglement coming in? What role would it play?

Thanks for the info Zargon. Did not know earlier. the thread may be closed. perhaps, i should have said reverse of entanglement.
 
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1. What is reverse entanglement?

Reverse entanglement is a theoretical concept in quantum physics where the entangled state of two particles is reversed. This means that the entangled particles, which were previously correlated in their properties, become uncorrelated again. This is in contrast to traditional entanglement, where particles remain correlated even when separated by large distances.

2. How is reverse entanglement possible?

The possibility of reverse entanglement arises from the reversible nature of quantum mechanics. In traditional entanglement, the entangled particles are in a superposition of states, meaning they exist in all possible states simultaneously. By reversing this superposition, the particles become uncorrelated again.

3. What are the potential applications of reverse entanglement?

Reverse entanglement has many potential applications, including quantum teleportation, quantum computing, and quantum cryptography. It could also be used to create more efficient and secure communication channels, as well as improve our understanding of the fundamental laws of physics.

4. Can energy be conserved in reverse entanglement?

Yes, energy conservation is still a fundamental law of physics in reverse entanglement. While the entangled particles may appear to have different properties after being reversed, the overall energy of the system remains the same. This is because energy is a conserved quantity in all physical processes.

5. Is reverse entanglement experimentally proven?

Although there have been some experimental demonstrations of reverse entanglement, it is still a theoretical concept and has not been fully proven. However, the principles of quantum mechanics that allow for reverse entanglement have been extensively tested and are well-established in the scientific community.

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