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jlcd
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How do you treat decoherence in purely electromagnetic field? In other words, can EM field also have decoherence? How?
jlcd said:How do you treat decoherence in purely electromagnetic field? In other words, can EM field also have decoherence? How?
jlcd said:IBut in electromagnetic field.. is decoherence about particle and the em wave.. but the em wave is not the wave function of the photon.. so what is decoherence with respect to?
So basically, you ask what replaces the wave function in quantum field theory? Instead of wave function you have a wave functional, which can be thought of as wave function depending on an infinite number of "coordinates".jlcd said:but the em wave is not the wave function of the photon
jlcd said:What I was inquiring was whether you use photons as particles in the decoherence in electromagnetic wave or whether you use wave.
jlcd said:In conventional QM, you use particles like electrons in the measurements..
jlcd said:Docoherence occurs when there is observational apparatus and say entangled photons.
jlcd said:I'm trying to get my head of pure em wave decohering other em waves.
That's incorrect.
jlcd said:but the context of it came from you yourself. reading about decoherence i saw this post of yours where you stated
jlcd said:i just wanted to know how do you deal with pure em wave decoherence?
Decoherence in an EM field refers to the loss of coherence or synchronization of the quantum states of particles within the field. This can be caused by interactions with the environment, such as other particles or electromagnetic radiation, which disrupt the delicate quantum states and cause them to become more classical and unpredictable.
Decoherence can cause quantum systems to lose their superposition and entanglement states, making them behave more classically. This can lead to the loss of quantum properties, such as interference and coherence, and make the system's behavior more predictable and classical.
Some common causes of decoherence in EM fields include interactions with other particles, such as collisions or scattering, as well as interactions with the electromagnetic radiation of the environment. These interactions can cause quantum states to become entangled with the environment, leading to the loss of coherence.
In some cases, decoherence can be reversed through a process called quantum error correction. This involves actively monitoring and controlling the system to prevent interactions with the environment and maintain coherence. However, this process can be difficult and is not always possible.
Decoherence is a major challenge in quantum computing, as it can cause errors and make it difficult to maintain the delicate quantum states needed for computation. Researchers are working on developing methods to reduce and correct for decoherence in order to improve the reliability and scalability of quantum computers.