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报告海报 - 中国科学院武汉物理与数学研究所
报告海报 - 中国科学院武汉物理与数学研究所

... correction codes are being developed, which can repair errors as they occur. Quantum error detection (QED) provides an alternative, albeit non-deterministic approach to handling errors, avoiding some of the complexity of full quantum error correction by simply rejecting errors when they are detected ...
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TAP 409-3: Uniform electric fields

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Atomic Emission Spectra and Quantum mechanical Model
Atomic Emission Spectra and Quantum mechanical Model

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... 9. What happens when an electric current is passed through the gas or vapor of an element? _______________________________________________________________ 10. Passing the light emitted by an element through a prism gives the ____________________ of the element. 11. Is the following sentence true or ...
< 1 ... 490 491 492 493 494 495 496 497 498 ... 514 >

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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