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Distribution dynamics of fisher and Wigner–Yanase information correlations of two qubits coupled to an open superconducting cavity

Research Authors
F. M. Aldosari, A.-B. A. Mohamed, A. Rahman, and M. Hashem
Research Abstract

In this paper, we explore distribution dynamics of two-qubit Fisher and skew information
correlations of a dissipative microwave cavity ¯eld interacting with two charged superconducting
qubits. Besides the negativity function, non-classical correlations beyond entanglement
are studied using local quantum Fisher information (LQFI) and local quantum
uncertainty (LQU). We ¯nd that the two-qubit non-classical correlations are sensitive to
qubit{qubit distribution angle, two-qubit dissipation parameter, and initial coherent state intensity.
The phenomena of frozen quantum correlations, sudden death or birth, as well as
revival dynamical maps are feasible in the current two-qubit state when exposed to a microwave
cavity. The non-classical correlations and entanglement have been found damped under the
two-qubit dissipation appearance in the ¯eld. For the increasing strength of coherence intensity
of the ¯eld, the two-qubit non-classical correlations functions remain to emerge quickly and
oscillate with higher frequency, although with the least amplitudes. Interestingly, unlike the
non-classical correlations, negativity does not emerge against higher coherence strengths of the
cavity and remains completely zero. Finally, for the least dissipation and higher coherence
strength, one can readily generate non-classical two-qubit states employing a microwave cavity.

Research Date
Research Department
Research Journal
Modern Physics Letters A
Research Publisher
Modern Physics Letters A
Research Rank
applied math.
Research Vol
38
Research Website
https://www.worldscientific.com/doi/abs/10.1142/S0217732323501511?af=R.
Research Year
2023
Research Pages
2350151 (14 pages)