Open AccessFidelity of two-level atoms’ quantum states in a strong thermal radiation field
Author(s) -
Deng-Yu Zhang,
Ping Guo,
Feng Gao
Publication year - 2007
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.56.1906
Subject(s) - pauli exclusion principle , physics , superposition principle , atom (system on chip) , thermal , fidelity , radiation , quantum , quantum state , field (mathematics) , quantum mechanics , atomic physics , mathematics , meteorology , computer science , pure mathematics , embedded system , electrical engineering , engineering
The two-level atom is described by Pauli sign and the environment is described by infinite harmonic particle thermal reservoir. We have studied the problem of fidelity of quantum states of two-level atoms located in strongly thermal radiation field. The two-level atoms' reducible density rectangular array is obtained. We discuss the properties of fidelity. It is shown that for the two two-level atoms initially situated in different coherent superposition states, quantum information may partly lose fidelity or may not lose fidelity during evolution in transmission process.