Quantum Interference Effects on Information Phase Space and Entropy Squeezing

Abstract

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.

Superactivating Bound Entanglement in Quantum Networks via Quantum Zeno Dynamics and a Novel Algorithm for Optimized Zeno Evolution

“…Frequent measurements can also speed up the interaction of a quantum system and its environment, which is known as the anti-Zeno effect [17]. The anti-Zeno effect has been recently attracting attention to improve our understanding of the decay of quantum systems [23][24][25][26] and has been finding interesting applications, such as enabling advantages in quantum heat engines [27]. QZE is also studied in nonlinear systems [28,29] and is considered to be playing an important role in understanding quantum tunneling [30] and the transition from the quantum to the classical world [31].…”