2007/03/31 by Faisal A. A. El-Orany, Mohamed Ridza Wahiddin, Wahiddin M R B +2
Computer Science · Physics and Astronomy · #Atom (system on chip) #Atomic physics #Atomic system #Electromagnetic field #Entropy (arrow of time) #Excited state #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Quantum optics #Quantum optics and atomic interactions #Von Neumann entropy #quant-ph
paper · pdf · doi:10.1016/j.optcom.2008.01.051
15 pages, 4 figures, comments are most welcome
arxiv created 2007/11/22 · openalex publication_date 2008/02/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this paper we consider a system of two two-level atoms interacting with a single-mode quantized electromagnetic field in a lossless resonant cavity via l-photon-transition mechanism. The field and the atoms are initially prepared in the coherent state and the excited atomic states, respectively. For this system we investigate the entropy squeezing, the atomic variances, the von Neumann entropy and the atomic inversions for the single-atom case. We show that the more the number of the parties in the system the less the amounts of the nonclassical effects exhibited in the entropy squeezing. The entropy squeezing can give information on the corresponding von Neumann entropy. Also the nonclassical effects obtained form the asymmetric atoms are greater than those obtained form the symmetric atoms. Finally, the entropy squeezing gives better information than the atomic variances only for the asymmetric atoms.