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Decoherence, non-Markovianity and quantum estimation in qubit
Decoherence, non-Markovianity and quantum estimation in qubit

11th International Conference on Squeezed - icssur 2009
11th International Conference on Squeezed - icssur 2009

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c 2013 by Nicholas Torleiv Bronn. All rights
c 2013 by Nicholas Torleiv Bronn. All rights

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... principle). He considers a simple double-split experiment with an interference pattern. By inserting a phase shifter behind the slit in one of the two paths a shift of the interference pattern occurs (the schematic experimental configuration is given in figure 1). The very point now is that, accordi ...
BS1 - Institute of Physics, Bhubaneswar
BS1 - Institute of Physics, Bhubaneswar

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Quantum electrodynamics



In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.
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