Inverting the quantum cloning of photons

DennisN
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Anyone keen on taking a bite at this? I understand what it's about (at least I think so), but I am certainly not qualified to evaluate it :shy:.

"Inverting the quantum cloning of photons" (Sadegh Raeisi, Wolfgang Tittel, Christoph Simon)
Arxiv: http://arxiv.org/abs/1111.7283
Article: http://www.physorg.com/news/2012-03-quantum.html (PhysOrg)
 
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Very interesting paper. Sort of another form of quantum eraser. I think actually performing the experiment will be very hard.
 
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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