Cat state
Quantum state, of opposed conditions / From Wikipedia, the free encyclopedia
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In quantum mechanics, the cat state, named after Schrödinger's cat,[1] is a quantum state composed of two diametrically opposed conditions at the same time,[2] such as the possibilities that a cat is alive and dead at the same time.
Generalizing Schrödinger's thought experiment, any other quantum superposition of two macroscopically distinct states is also referred to as a cat state. A cat state could be of one or more modes or particles, therefore it is not necessarily an entangled state. Such cat states have been experimentally realized in various ways and at various scales.