Quantum Interference Effects on Information Phase Space and Entropy Squeezing

• Main Authors: Abdel-Baset A. Mohamed, Shoukry S. Hassan, Rania A. Alharbey
• Format: Article
• Language: English
• Published: MDPI AG 2019-02-01
• Series: Entropy
• Subjects: Wehrl entropy; entropy squeezing; quantum interference; 2-photon transition; squeezed vacuum reservoir
• Online Access: https://www.mdpi.com/1099-4300/21/2/147

Wehrl entropy and its density are used to investigate the dynamics of loss of coherence and information in a phase space for an atomic model of two-photon two-level atom coupled to different radiation reservoirs (namely, normal vacuum (NV), thermal field (TF) and squeezed vacuum (SV) reservoirs). Particularly, quantum interference (QI) effect, due to the 2-photon transition decay channels, has a paramount role in: (i) the atomic inversion decay in the NV case, which behaves as quantum Zeno and anti-Zeno decay effect; (ii) the coherence and information loss in the phase space; and (iii) identifying temporal information entropy squeezing. Results are also sensitive to the initial atomic state.