B Quantum Superposition: Is It Limited or Unlimited?

Allen_Wolf
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Is Superposition of the position of particle limited to a certain area or is it unlimited?
Like, an electron: Can an electron on Earth be like in Jupiter or proxima centauri due to superposition? I mean, such vast distances?
 
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It can, but the probability is too small to even think about it being so far away.
 
Allen_Wolf said:
Is Superposition of the position of particle limited to a certain area or is it unlimited?
Like, an electron: Can an electron on Earth be like in Jupiter or proxima centauri due to superposition? I mean, such vast distances?
In theory, yes. But I don't see how you could achieve that experimentally. And such a superposition would be extremely sensitive to decoherence: the smallest interaction of the electron with something on Earth or on Jupiter would result in the electron being here or there.
 
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Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
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