808 citations · 2.2k across the 39 of their papers we have counts for
38 papers · 1 filter
Detection of quantum phase transition in spin-1 chain through multipartite high-order correlations
Dongkeun Lee, Adel Sohbi, Wonmin Son
We design a Bell inequality that is violated by correlations obtained from the ground states of XXZ spin-1 chain with on site anisotropies at the region of phase transition. In ord…
Bell-type correlation at quantum phase transitions in spin-1 chain
Dongkeun Lee, Wonmin Son
For the identification of non-trivial quantum phase, we exploit a Bell-type correlation that is applied to the one-dimensional spin-1 XXZ chain. It is found that our generalization…
Noise-adaptive test of quantum correlations with quasiprobability functions
Seung-Woo Lee, Jaewan Kim, Wonmin Son
We introduce a method for testing quantum correlations in terms of quasiprobability functions in the presence of noise. We analyze the effects of measurement imperfection and therm…
Entropic Uncertainty Relations via Direct-Sum Majorization Relation for Generalized Measurements
Kyunghyun Baek, Hyunchul Nha, Wonmin Son
We derive an entropic uncertainty relation for generalized positive-operator-valued measure (POVM) measurements via a direct-sum majorization relation using Schur concavity of entr…
Efficient High-dimensional Quantum Key Distribution with Hybrid Encoding
Yonggi Jo, Hee Su Park, Seung-Woo Lee +1
We propose a schematic setup of quantum key distribution (QKD) with an improved secret key rate based on high-dimensional quantum states. Two degrees-of-freedom of a single photon,…
Enhanced Bell state measurement for efficient measurement-device-independent quantum key distribution using 3-dimensional quantum states
Yonggi Jo, Kwangil Bae, Wonmin Son
We propose an enhanced discrimination measurement for tripartite 3-dimensional entangled states in order to improve the discernible number of orthogonal entangled states. The schem…