Open AccessThe evolution of three-body entanglement in the system of atoms interacting with coupled cavities
Author(s) -
LU Dao-ming
Publication year - 2012
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.61.180301
Subject(s) - quantum entanglement , physics , superposition principle , atom (system on chip) , coupling (piping) , photon , coupling constant , constant (computer programming) , quantum mechanics , atomic physics , quantum , materials science , computer science , embedded system , programming language , metallurgy
In this paper we consider the situation that four identical two-level atoms are separately trapped in coupled single-mode optical cavities and each atom resonantly interacts with cavity via a one-photon hopping. The three-body entanglement dynamics in each cavity is studied. The influences of atom-cavity coupling constant on the three-body entanglement are discussed. The results obtained using the numerical method show that the three-body entanglement displays the collapse-revival phenomena when atom-cavity coupling constant is larger than a fixed value. On the other hand, the three-body entanglement is the result of the coherent superposition of the two-body entanglements.