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7 papers · 1 filter
norm of coherence is not equal to its convex roof quantifier
Jianwei Xu
Since a rigorous framework for quantifying quantum coherence was established by Baumgratz et al. [T. Baumgratz, M. Cramer, and M. B. Plenio, Phys. Rev. Lett. 113, 140401 (2014)], m…
Estimating coherence with respect to general quantum measurements
Jianwei Xu, Lin Zhang, Shao-Ming Fei
The conventional coherence is defined with respect to a fixed orthonormal basis, i.e., to a von Neumann measurement. Recently, generalized quantum coherence with respect to general…
Spectral radius conditions for the existence of all subtrees of diameter at most four
Xiangxiang Liu, Hajo Broersma, Ligong Wang
Let denote the spectral radius of a graph . We partly confirm a conjecture due to Nikiforov, which is a spectral radius analogue of the well-known Erdős-Sós Conjecture th…
Single-photon-triggered spin squeezing with decoherence reduction in optomechanics via phase matching
Zhucheng Zhang, Lei Shao, Wangjun Lu +4
Quantum spin squeezing is an important resource for quantum information processing, but its squeezing degree is not easy to preserve in an open system with decoherence. Here, we pr…
Classifying In-Place Gestures with End-to-End Point Cloud Learning
Lizhi Zhao, Xuequan Lu, Min Zhao +1
Walking in place for moving through virtual environments has attracted noticeable attention recently. Recent attempts focused on training a classifier to recognize certain patterns…
When to Preprocess? Keeping Information Fresh for Computing Enable Internet of Things
Xijun Wang, Minghao Fang, Chao Xu +4
Age of information (AoI), a notion that measures the information freshness, is an essential performance measure for time-critical applications in Internet of Things (IoT). With the…