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- Title
Entanglement, quantum coherence and quantum Fisher information of two qubit-field systems in the framework of photon-excited coherent states.
- Authors
Abdel-Khalek, S.; Algarni, M.; Marin, Marin; Berrada, K.
- Abstract
Based on coherent state theory, the photon-excited coherent states associated with pseudo-harmonic oscillators (PE-CSPHOs) are considered to investigate the interaction between a system of two qubits (two-level atoms) and a radiation field. By considering the dipole–dipole Hamiltonian and Ising Hamiltonian, we solve the Schrödinger equation to examine the influence of the qubit-qubit interaction (Q–QI) on the dynamics of the Q–Q entanglement and the entanglement between the two qubits and field. Furthermore, we study the dynamics of norm coherence and Fisher information, based on symmetric logarithmic derivative, with respect to the physical parameters of the system and explore the relation among the quantifiers during quantum dynamics.
- Subjects
COHERENT states; QUANTUM coherence; FISHER information; QUANTUM theory; SCHRODINGER equation; QUBITS; HARMONIC maps
- Publication
Optical & Quantum Electronics, 2023, Vol 55, Issue 14, p1
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-023-05504-2