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How does Quantum entanglement work? This is a topic that I am just studying now. A single photon can be split into a pair. One sister photon travels large distances and is captured. The other sister remains in the lab. Changes to the lab sister cause changes to the external sister so that they are entangled. The speed of change is estimated at 10,000 light speed or instantaneous. Einstein called this spooky....
Quote from: jerrygg38 on 13/07/2016 22:09:06I need some clarification from someone more familiar with this subject.According to Planck's law, energy of a single photon is E=hf. If it is split into a pair, what is the energy of each half?Is the frequency of the split pair different than the original photon?Is it possible to split the pair further into quadruple? or even further more?
I have not studies this topic much but if you split a photon then the energy of each part will be less. If you split it in half the energy of each half would be 0.5hf. This frequency of each half will be half the original frequency. I guess it may be possible to keep splitting it but as the frequency drops you get out of the light spectra.
Quote from: jerrygg38 on 23/07/2016 11:30:45 I have not studies this topic much but if you split a photon then the energy of each part will be less. If you split it in half the energy of each half would be 0.5hf. This frequency of each half will be half the original frequency. I guess it may be possible to keep splitting it but as the frequency drops you get out of the light spectra.In your scenario, if you start with visible light, after first splitting you would end up with infra red already. This doesn't seem to happen in experiments.
I am working on another model of the photon right now. So my answer would be no good. What does the experiments really show? One photon is split and becomes two photons of the same energy level? That would imply that the splitting caused a duplication to occur. Can you shed more light on the process or lead me to the details.
To do this they fired a beam of photons at a splitter, so half of the light was transmitted and half was reflected. The transmitted light went to one lab and the reflected light went to the other. (These were "Alice" and "Bob" of the thought experiment.)The light was transmitted as a single photon at a time, so the photon was split in two. Before the photon was measured, it existed in a superposition state.One lab (Alice) used a laser as a reference, to measure the phase of the photon. If one thinks of light as a repeating sine wave, phase is the angle one is measuring, from 0 to 180 degrees. When Alice changed the angle of her reference laser, she got varying measurements of the photon: Either her photon was in a certain phase or it wasn't present at all.Then the other lab (or Bob) looked at their photons and found the photons were anti-correlated with Alice — if she saw a photon he did not, and vice versa. The state of Bob's photon depended on what Alice measured. But in classic physics that shouldn't happen; rather, the two particles should be independent of one another.
Entanglement occurs when a pair of particles, such as photons, interact physically. A laser beam fired through a certain type of crystal can cause individual photons to be split into pairs of entangled photons. The photons can be separated by a large distance, hundreds of miles or even more. When observed, Photon A takes on an up-spin state. Entangled Photon B, though now far away, takes up a state relative to that of Photon A (in this case, a down-spin state). The transfer of state between Photon A and Photon B takes place at a speed of at least 10,000 times the speed of light, possibly even instantaneously, regardless of distance.