Theory of frequency-filtered and time-resolved N-photon correlations

E. del Valle, A. Gonzalez-Tudela, F. P. Laussy, C. Tejedor, Michael J. Hartmann

Research output: Contribution to journalArticlepeer-review

114 Citations (Scopus)


A theory of correlations between N photons of given frequencies and detected at given time delays is presented. These correlation functions are usually too cumbersome to be computed explicitly. We show that they are obtained exactly through intensity correlations between two-level sensors in the limit of their vanishing coupling to the system. This allows the computation of correlation functions hitherto unreachable. The uncertainties in time and frequency of the detection, which are necessary variables to describe the system, are intrinsic to the theory. We illustrate the power of our formalism with the example of the Jaynes-Cummings model, by showing how higher order photon correlations can bring new insights into the dynamics of open quantum systems.

Original languageEnglish
Article number183601
JournalPhysical Review Letters
Issue number18
Publication statusPublished - 2 Nov 2012

ASJC Scopus subject areas

  • General Physics and Astronomy


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