Topology-Controlled Phase Coherence and Quantum Fluctuations in Superconducting Nanowires
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Superconductivity and Novel Magnetism"
DOI: 10.1007/s10948-019-05381-5
Abstract: Superconducting properties of metallic nanowires may strongly depend on specific experimental conditions. Here we consider a setup where superconducting phase fluctuations are restricted at one point inside the wire and equilibrium supercurrent flows along the… read more here.
Keywords: coherence quantum; phase; phase coherence; controlled phase ... See more keywords
Coherence of quantum channels
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DOI: 10.1016/j.aop.2018.08.014
Abstract: We investigate the coherence of quantum channels using the Choi-Jamiolkowski isomorphism. The relation between the coherence and the purity of the channel respects a duality relation. It characterizes the allowed values of coherence when the… read more here.
Keywords: coherence quantum; coherence; quantum channels; purity ... See more keywords
Long range quantum coherence, quantum & classical correlations in Heisenberg XX chain
Sign Up to like & getrecommendations! Published in 2019 at "Physica A: Statistical Mechanics and its Applications"
DOI: 10.1016/j.physa.2018.11.062
Abstract: Abstract A comparative study of pairwise quantum coherence, quantum and classical correlations is addressed for non-nearest spin pairs of the 1D Heisenberg spin- 1 2 XX chain. Following the Jordan–Wigner mapping, we diagonalize the hamiltonian… read more here.
Keywords: chain; coherence quantum; quantum coherence; quantum ... See more keywords
Geometric coherence and quantum state discrimination
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/aac979
Abstract: One of the important features of quantum mechanics is that non-orthogonal quantum states cannot be perfectly discriminated. Therefore, a fundamental problem in quantum mechanics is to design a optimal measurements to discriminate a collection of… read more here.
Keywords: coherence quantum; quantum; geometric coherence; quantum state ... See more keywords
Coherence of quantum channels
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.052311
Abstract: We investigate the coherence of quantum channels and establish a resource theory for quantifying the coherence of quantum channels via Choi matrix. To this aim, we define the incoherent channels and incoherent superchannels. This theory… read more here.
Keywords: coherence quantum; quantum channels; coherence;