Nonquantum Information Gain from Higher-order Correlation Functions

  title={Nonquantum Information Gain from Higher-order Correlation Functions},
  author={Peter D. Grunwald},
Nonlinear correlation functions are at the heart of quantum theory. The second-order correlation function g (2) ( τ ) has been a cornerstone of quantum optics since over half a century and a myriad of quantum and classical applications has been discovered. In contrast, higher-order correlation functions have so far only been used to reveal the nonclassical character of the emitted fields. In this paper, we study the relation between the k th-order correlation function g ( k ) (0) and the… 

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