Quantum Phase Transition of a Quantum Mixed Spin Chain by Employing Density Matrix Renormalization Group Method
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DOI: 10.1002/andp.202100011
Abstract: The fidelity susceptibility and trace distance in the valence‐bond‐solid (VBS) transition of a quantum mixed spin chain is investigated, which consists of unit cells arrayed as 1/2‐1/2‐1‐1 with alternating Heisenberg antiferromagnetic exchange couplings, by using… read more here.
Keywords: quantum mixed; trace distance; quantum; critical point ... See more keywords
Bipartite non-classical correlations for a lossy two connected qubit–cavity systems: trace distance discord and Bell’s non-locality
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DOI: 10.1007/s11128-018-1865-2
Abstract: In this paper, some non-classical correlations are investigated for bipartite partitions of two qubits trapped in two spatially separated cavities connected by an optical fiber. The results show that the trace distance discord and Bell’s… read more here.
Keywords: non classical; distance discord; classical correlations; trace distance ... See more keywords
Pairwise nonclassical correlations for superposition of Dicke states via local quantum uncertainty and trace distance discord
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DOI: 10.1007/s11128-018-2149-6
Abstract: The pairwise nonclassical correlations for two-qubit states, extracted from multi-qubit system with exchange symmetry and parity, are quantified by local quantum uncertainty and trace distance discord. The explicit expressions of local quantum uncertainty and geometric… read more here.
Keywords: quantum uncertainty; distance discord; local quantum; trace distance ... See more keywords
Strong bound between trace distance and Hilbert-Schmidt distance for low-rank states
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DOI: 10.1103/physreva.100.022103
Abstract: The trace distance between two quantum states, $\rho$ and $\sigma$, is an operationally meaningful quantity in quantum information theory. However, in general it is difficult to compute, involving the diagonalization of $\rho - \sigma$. In… read more here.
Keywords: distance; low rank; trace; schmidt distance ... See more keywords
Generalized trace distance approach to quantum non-Markovianity and detection of initial correlations
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DOI: 10.1103/physreva.98.012120
Abstract: A measure of quantum non-Markovianity for an open system dynamics, based on revivals of the distinguishability between system states, has been introduced in the literature using the trace distance as quantifier for distinguishability. Recently it… read more here.
Keywords: non markovianity; quantum non; quantum; detection ... See more keywords