Open AccessCumulants and waitingtime distribution of the photon emission from driven BaF molecule
Author(s) -
Liyi Gu,
Yonggang Peng
Publication year - 2016
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.65.094202
Subject(s) - physics , dipole , field (mathematics) , excited state , photon , cumulant , atomic physics , moment (physics) , photon antibunching , transition dipole moment , ground state , quantum electrodynamics , quantum mechanics , statistics , mathematics , pure mathematics
In this paper, we consider a single BaF molecule driven by an external field. When the symmetry is broken, the states of the BaF molecule demonstrate the permanent dipole moments. An external laser field to excite BaF molecule transition from its ground state to its excited state, and a radio frequency field couple with the permanent dipole moment of the BaF. The first order and second order cumulants of the emission photons and the waiting time distribution are studied via the recently developed generating function approach, which is very convenient to study the counting statistics and the corresponding probability distributions. The results demonstrate that the radio frequency field could help the BaF molecule to absorb photons from the driving field. The second and third order waiting time distributions oscillate with the evolution time, which reflects the states oscillating with the external radio frequency field.