2026/2/5
Jalil Naji Domirani

Jalil Naji Domirani

Academic rank: Associate Professor
ORCID:
Education: PhD.
H-Index:
Faculty: Basic Science
ScholarId:
E-mail: j.naji [at] ilam.ac.ir
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Phone:
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Research

Title
Dynamics of quantum Fisher and Wigner-Yanase skew information following a noisy quench
Type
JournalPaper
Keywords
Dynamical phase transitions, Noise, Nonequilibrium statistical mechanics
Year
2025
Journal PHYSICAL REVIEW B
DOI
Researchers Jalil Naji Domirani ، R.Jafari ، Alireza Akbari ، Mehdi Abdi

Abstract

We study the effect of noise on the dynamics of the transverse-field Ising model quenched across a quantum critical point. To quantify two-spin correlations, we employ the quantum Fisher information (QFI) and the Wigner-Yanase skew information (WYSI) as measures of quantum coherence. In the noiseless case, in contrast to the dynamics of entanglement in anisotropic XY chains, both QFI and WYSI increase monotonically with the ramp quench time, approaching their adiabatic limits without exhibiting any Kibble-Zurek-type scaling with quench duration. In contrast, when noise is added to the quench protocol, the coherence dynamics change qualitatively: QFI and WYSI both decay exponentially with the timescale of a ramp quench, with an exponent determined by the noise intensity. Furthermore, the maximum ramp time, at which either of these measures reaches its maximum, scales linearly with the noise variance, featuring the same exponent that determines the optimal annealing time for minimizing defect production in noisy quantum annealing.Furthermore, the maximum ramp time, at which either of these measures reaches its maximum, scales linearly with the noise variance, featuring the same exponent that determines the optimal annealing time for minimizing defect production in noisy quantum annealing.