Characteristics of the temporal behavior of quantum Fisher information and entanglement between radiation field and two atoms under atomic motion effect

2021 ◽  
pp. 2150259
Author(s):  
E. Hilal ◽  
S. Alkhateeb ◽  
E. M. Khalil ◽  
S. Abdel-Khalek ◽  
Hammad Alotaibi ◽  
...  
Keyword(s):  
Fisher Information ◽  
Quantum Communication ◽  
Coupling Parameter ◽  
Quantum Fisher Information ◽  
Single Mode ◽  
Time Dependent ◽  
Mandel Parameter ◽  
Dependent Parameter ◽  
Motion Effect ◽  
Degree Of Entanglement

The influence of time dependence on the model which consists of two qubits interacting with a two-mode electromagnetic field of the parametric amplifier type is investigated. The analytical solution of the wave function is obtained. The quantum Fisher information, entanglement and population inversion for a time-dependent system are analyzed. The photon statistics of a single-mode are quantified by the evolution of the Mandel parameter. Our results showed that there exists a positive relationship between the time-dependent parameter and entanglement. In other words, the time-dependent parameter due to the degree of entanglement is increased. Also, the quantum quantifier is strongly affected by the time-dependent coupling parameter in the absence and presence of the detuning parameter. This enables new parameters to control the degree of entanglement and quantum Fisher information, especially in quantum communication.

scholarly journals Using states with a large photon number variance to increase quantum Fisher information in single-mode phase estimation

2019 ◽  
Vol 3 (11) ◽  
pp. 115008 ◽  
Author(s):  
Changhyoup Lee ◽  
Changhun Oh ◽  
Hyunseok Jeong ◽  
Carsten Rockstuhl ◽  
Su-Yong Lee
Keyword(s):  
Fisher Information ◽  
Photon Number ◽  
Quantum Fisher Information ◽  
Single Mode ◽  
Phase Estimation

scholarly journals Effects of Energy Dissipation and Deformation Function on the Entanglement, Photon Statistics and Quantum Fisher Information of Three-Level Atom in Photon-Added Coherent States for Morse Potential

Symmetry ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2188
Author(s):  
Sayed Abdel-Khalek ◽  
Eied M. Khalil ◽  
Hammad Alotaibi ◽  
Sayed M. Abo-Dahab ◽  
Emad E. Mahmoud ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Fisher Information ◽  
Morse Potential ◽  
Quantum Fisher Information ◽  
Photon Statistics ◽  
Field Mode ◽  
Mandel Parameter ◽  
Level Atom ◽  
Physical Phenomena

The present research paper considers a three-level atom (3LA) that interacts with a field mode primarily in a photon-added coherent state of Morse potential (PACSMP). The dynamics of entanglement, the photon statistics, and the quantum Fisher information are investigated. The statistics of field photons are discussed by evaluating the Mandel parameter. We check the influence of the energy dissipation and intensity-dependent function. Finally, we detect the relationship between the entanglement, the field’s nonclassical characteristics, and atomic quantum Fisher information throughout the evolution of time. The findings illustrate the important role of the number of added photons and CSMP in affecting the entanglement’s time evolution, the quantum Fisher information, and the Mandel parameter. Based on the obtained results, we reached significant physical phenomena, including the sudden birth and death of the nonlocal correlation between atom-Morse potential field structures.

Quantum Fisher Information of Two Moving Four-Level Atoms

2020 ◽  
Vol 41 (3) ◽  
pp. 310-320
Author(s):  
S. Jamal Anwar ◽  
M. Usman ◽  
M. Ramzan ◽  
M. Khalid Khan
Keyword(s):  
Fisher Information ◽  
Quantum Fisher Information

scholarly journals Comment on “Fisher information of a vector potential for time‐dependent Feinberg–Horodecki equation”

2021 ◽  
Author(s):  
João P. G. Nascimento ◽  
Vanderley Aguiar ◽  
Raimundo N. Costa Filho ◽  
João Milton Pereira Jr
Keyword(s):  
Fisher Information ◽  
Vector Potential ◽  
Time Dependent

Does relativistic motion always degrade quantum Fisher information?

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Xiaobao Liu ◽  
Jiliang Jing ◽  
Zehua Tian ◽  
Weiping Yao
Keyword(s):  
Fisher Information ◽  
Quantum Fisher Information ◽  
Relativistic Motion

The solution of an infinite set of differential-difference equations occurring in polymerization and queueing problems

1963 ◽  
Vol 59 (1) ◽  
pp. 117-124 ◽  
Author(s):  
A. Wragg
Keyword(s):  
Difference Equations ◽  
Queueing Theory ◽  
Bessel Functions ◽  
Formal Solution ◽  
Monomer Concentration ◽  
Arrival Rate ◽  
Time Dependent ◽  
Type Integral ◽  
Dependent Parameter ◽  
Infinite Set

AbstractThe time-dependent solutions of an infinite set of differential-difference equations arising from queueing theory and models of ‘living’ polymer are expressed in terms of modified Bessel functions. Explicit solutions are available for constant values of a parameter describing the arrival rate or monomer concentration; for time-dependent parameter a formal solution is obtained in terms of a function which satisfies a Volterra type integral equation of the second kind. These results are used as the basis of a numerical method of solving the infinite set of differential equations when the time-dependent parameter itself satisfies a differential equation.

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