I Understanding Coherence in Quantum Mechanics

Sheldon Cooper
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Hi,

Can anyone please explain the physical meaning of coherence(Quantum Mechanics).

Thanks is advance
 
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Physical meaning of coherence would be that beams of particles (or two parts of the same beam) are coherent if they show interference pattern when they overlap with different offsets.
 
A term "coherent state" has two different meanings: a narrow one meant by A. Neumaier and a broad one meant by zonde.
 
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