## Abstract

A key ingredient of cavity QED is the coupling between the discrete energy levels of an atom and photons in a single-mode cavity. The addition of periodic ultrashort laser pulses allows one to use such a system as a source of single photons-a vital ingredient in quantum information and optical computing schemes. Here we analyze and time-adjust the photon-counting statistics of such a single-photon source and show that the photon statistics can be described by a simple transport-like nonequilibrium model. We then show that there is a one-to-one correspondence of this model to that of nonequilibrium transport of electrons through a double quantum dot nanostructure, unifying the fields of photon-counting statistics and electron-transport statistics. This correspondence empowers us to adapt several tools previously used for detecting quantum behavior in electron-transport systems (e.g., super-Poissonian shot noise and an extension of the Leggett-Garg inequality) to single-photon-source experiments.

Original language | English |
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Article number | 063840 |

Journal | Physical Review A - Atomic, Molecular, and Optical Physics |

Volume | 82 |

Issue number | 6 |

DOIs | |

Publication status | Published - 2010 Dec 30 |

## All Science Journal Classification (ASJC) codes

- Atomic and Molecular Physics, and Optics