학술논문
Microscopic approach to field dissipation in the Jaynes-Cummings model.
Document Type
Journal
Author
González-Gutiérrez, C. A. (MEX-NAM11-IP) AMS Author Profile; Solís-Valles, D. (MEX-ITM-SEN) AMS Author Profile; Rodríguez-Lara, B. M. (MEX-ITM-SEN) AMS Author Profile
Source
Subject
81 Quantum theory -- 81Q General mathematical topics and methods in quantum theory
81Q30Feynman integrals and graphs; applications of algebraic topology and algebraic geometry
81Q30
Language
English
Abstract
Summary: ``We use the microscopic derivation of the Jaynes-Cummings model master equation under field losses to study the dynamics of initial field-qubit states in the single-excitation manifold and beyond. We show that field-qubit detuning, as well as finite temperature, modify the effective decay rate of the system using measures like field-qubit purity and concurrence for the case of one-excitation, and for initial Fock states for more excitations. For initial semi-classical states of the field, we show that the microscopic approach, in phase space, provides an evolution to thermal equilibrium that is smoother than the one provided by the standard phenomenological approach.''