Unraveling Quantum Weirdness: A Guide to Understanding Entanglement Phenomena

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In summary, even if a single photon is emitted into a medium without being absorbed or reemitted, its wave equation is still affected by the presence of the medium. This means that the probability of finding the photon is different than in a vacuum. Even if the photon is split into two paths, with one going through water and one not, the presence of the water still affects the overall outcome. This phenomenon is known as entanglement and can be explained through the Aharonov-Bohm effect. This is just one example of the strange and fascinating world of quantum mechanics, as described in the book "Quantum: A Guide for the Perplexed" by Jim Al-Khalili.
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Now for the true quantum weirdness. Even if one single photon is emitted into the medium and that photon is not absorbed or reemitted the photon's wave equation describing where it could be is STILL affected by the prescience of the medium. When all the possible paths through the medium are added together the center of the probability of where we find the photon is different than how it would be in a vacuum.

Even if we split the photon so that it could go on two different paths and one goes through water and one does not the net is STILL affected by the prescience of the water on the other path. It's important to note that the FRONT speed (the leading edge) of the probability "wave" is still the speed of light.

This is the Quantum Jewel Thief level of weirdness. The thought experiment for the Quantum Jewel is explained in the following book:

"Quantum: A Guide for the Perplexed" by Jim Al-KhaliliHow do you 'explain' this? This looks like an entanglement-phenomen.
 
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What is quantum weirdness?

Quantum weirdness refers to the strange and counterintuitive behavior exhibited by subatomic particles, such as the ability to exist in multiple states at once and to be entangled with other particles.

What is entanglement?

Entanglement is a phenomenon in which two or more particles become connected in such a way that the state of one particle can affect the state of the other, even when they are physically separated.

How does entanglement occur?

Entanglement occurs when particles interact with each other and become correlated in their properties, such as spin or position. This can happen through various processes, such as collision or interaction with a common environment.

What are the practical applications of entanglement?

Entanglement has many potential applications in quantum computing, cryptography, and communication. It also plays a crucial role in understanding the behavior of matter at a fundamental level.

How is entanglement measured and verified?

Entanglement can be measured and verified through various experiments, such as the Bell test or quantum teleportation. These experiments involve manipulating and measuring the properties of entangled particles to confirm their correlation and non-locality.

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