59 citations · 83 across the 4 of their papers we have counts for
6 papers · 1 filter
Gisin's Theorem for Three Qubits
Jing-Ling Chen, Chunfeng Wu, L. C. Kwek +1
We present a Theorem that all generalized Greenberger-Horne-Zeilinger states of a three-qubit system violate a Bell inequality in terms of probabilities. All pure entangled states…
Quantum nonlocality of Heisenberg XX model with Site-dependent Coupling Strength
Chunfeng Wu, Jing-Ling Chen, D. M. Tong +2
We show that the generalized Bell inequality is violated in the extended Heisenberg model when the temperature is below a threshold value. The threshold temperature values are obta…
Multi-Component Bell Inequality and its Violation for Continuous Variable Systems
Jing-Ling Chen, Chunfeng Wu, L. C. Kwek +3
Multi-component correlation functions are developed by utilizing d-outcome measurements. Based on the multi-component correlation functions, we propose a Bell inequality for bipart…
Certain quantum key distribution achieved by using Bell states
Chong Li, He-Shan Song, Ling Zhou +1
A new protocol for quantum key distribution based on entanglement swapping is presented. In this protocol, both certain key and random key can be generated without any loss of secu…
Continuous Multipartite Entangled State in Wigner Representation and the Violation of Zukowski-Brukner Inequality
Chunfeng Wu, Jing-Ling Chen, L. C. Kwek +2
We construct an explicit Wigner function for N-mode squeezed state. Based on a previous observation that the Wigner function describes correlations in the joint measurement of the…
A random quantum key distribution by using Bell states
Chong Li, He-Shan Song, Ling Zhou +1
We proposed a new scheme for quantum key distribution based on entanglement swapping. By this protocol \QTR{em}{Alice} can securely share a random quantum key with \QTR{em}{Bob}, w…