Open AccessSudden birth versus sudden death of entanglement during the interaction of macroscopic fields with environments
Author(s) -
Luo Cheng-Li,
Shen Li-Tuo,
Wenwu Liu
Publication year - 2013
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.62.190301
Subject(s) - quantum entanglement , quantum decoherence , physics , sudden death , concurrence , photon entanglement , photon , quantum mechanics , field (mathematics) , quantum electrodynamics , quantum , medicine , cardiology , mathematics , pure mathematics
Decoherence of two initially entangled macroscopic fields each interacting with a loss environment is investigated; environment only have an effect on the leakage of field’s photons. The cavity-cavity entanglement is characterized by concurrence. The results obtained by resolvable values show a surprising result: the two entangled macroscopic fields become completely disentangled even though the leakage rate of the cavities fields is very tiny. Then we find that when the cavity entanglement disappears, the environment entanglement appears. Finally, we present an explanatory study of other entanglement partitions.