Quantum beats

（重定向自Quantum beat）

In physics, quantum beats are simple examples of phenomena that cannot be described by semiclassical theory, but can be described by fully quantized calculation, especially quantum electrodynamics. In semiclassical theory (SCT), there is an interference or beat note term for both V-type and $\Lambda$ -type atoms. However, in the quantum electrodynamic (QED) calculation, V-type atoms have a beat term but $\Lambda$ -types do not. This is strong evidence in support of quantum electrodynamics.

单词	Quantum beat
释义	Quantum beat 英语百科 Quantum beats （重定向自Quantum beat） In physics, quantum beats are simple examples of phenomena that cannot be described by semiclassical theory, but can be described by fully quantized calculation, especially quantum electrodynamics. In semiclassical theory (SCT), there is an interference or beat note term for both V-type and $\Lambda$ -type atoms. However, in the quantum electrodynamic (QED) calculation, V-type atoms have a beat term but $\Lambda$ -types do not. This is strong evidence in support of quantum electrodynamics.
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