von Neumann entropy

Contents

EnglishEdit

 
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EtymologyEdit

Named after John von Neumann.

PronunciationEdit

  • IPA(key): /vɔn ˈnoɪ.mən ˈɛn.tɹə.pi/

NounEdit

von Neumann entropy

  1. (quantum mechanics) The entropy of a quantum state. If the state is expressed as a quantum density matrix  , then this entropy can be expressed mathematically as   where   is the trace operator and the logarithm is natural.