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Quantum Algorithms
Quantum Correlation Hierarchy and Teleportation in Dephased Hydrogen Hyperfine System
arXiv
Authors: Geerthana Thiyagarajan, R. Muthuganesan
Year
2026
Paper ID
68832
Status
Preprint
Abstract Read
~2 min
Abstract Words
215
Citations
N/A
Abstract
We study the dynamics of quantum correlations in the hydrogen hyperfine spin system subject to Markovian phase noise. Treating the electron and proton spin degrees of freedom as an open two-qubit system governed by an isotropic hyperfine Hamiltonian and local dephasing, we obtain the exact time-dependent density matrix and derive analytical expressions for the full X-state family. We compute concurrence(C), trace-distance measurement-induced nonlocality Trace MIN--$mathcal{N}1$, and average steering coherence (ASC) in closed form and establish their strict ordering C(t)leq mathcal{N}1(t)leq ASC(t) at all times. Entanglement is identified as the most fragile resource, undergoing sudden death at a finite time. Trace MIN exhibits dephasing-immune freezing for states with nonzero population imbalance, while ASC is the most robust quantity, persisting longest in every scenario studied.We additionally demonstrate that the dephased thermal hyperfine state serves as a resource for quantum teleportation, deriving a closed-form expression for the average fidelity and establishing that the teleportation advantage window coincides exactly with the entanglement survival interval, mathcal{F}A > 2/3 Longleftrightarrow mathcal{C} > 0, for the full X-state family with maximally mixed marginals. We identify four distinct dynamical regimes and map all three correlation measures onto directly measurable Pauli spin correlators, enabling experimental reconstruction of the full hierarchy without full state tomography.
Why This Paper Matters
- It adds a 2026 reference point for readers tracking recent quantum research.
- We study the dynamics of quantum correlations in the hydrogen hyperfine spin system subject to Markovian phase noise.
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