What Happens to One Electron in an Entangled Pair Affects the Other?

  • Thread starter Thread starter Quantom
  • Start date Start date
  • Tags Tags
    Entanglement
Quantom
Messages
25
Reaction score
0
Whenever i read or watch something on entanglement all they seem to talk about is the spin states of electrons. And i am confused, does whatever happen to one, the opposite happens to the other or can the same thing happen to both due to entanglement. Does entanglement go further than spin states, say for example if one electron is given energy, would its entangled pair electron gain that same amount of energy (or lose what the other gained)? And what about orientation like if one electron's probability density is shifted left will its entangled pair electron experience the same spatial shift to the right (or left as well)? thanks for your responses in advance.
 
Physics news on Phys.org
Quantom said:
Whenever i read or watch something on entanglement all they seem to talk about is the spin states of electrons. And i am confused, does whatever happen to one, the opposite happens to the other or can the same thing happen to both due to entanglement. Does entanglement go further than spin states, say for example if one electron is given energy, would its entangled pair electron gain that same amount of energy (or lose what the other gained)? And what about orientation like if one electron's probability density is shifted left will its entangled pair electron experience the same spatial shift to the right (or left as well)? thanks for your responses in advance.

Yes, entangled particles - be they electrons or the more common photons - share other property combinations than just spin states. Frequency, momentum, position, etc. are also related. They can be entangled in a variety of ways depending on the experimental setup, so there is not one absolute answer. But the general rule is that that a single wave function describes non-commuting properties, and it is often convenient to think in terms of "what happens to one happens to the other". But no-one actually knows what is going on beneath the hood, even though the theoretical predictions are realized experimentally.
 
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!

Similar threads

Back
Top