Tunable Continuous‐Variable Tripartite Entanglement via Cascaded Third‐Order Nonlinear Processes in a Ring Cavity

2021 ◽  
pp. 2100396
Author(s):  
Feng Wen ◽  
Sijia Hui ◽  
Shaowei Zhang ◽  
Zhenkun Wu ◽  
Zongchen Liu ◽  
...  
Keyword(s):  
Ring Cavity ◽  
Continuous Variable ◽  
Nonlinear Processes ◽  
Tripartite Entanglement ◽  
Third Order

Five-partite continuous-variable entanglement generated by cascaded nonlinear processes in only one optical superlattice

2018 ◽  
Vol 15 (12) ◽  
pp. 125202
Author(s):  
Youbin Yu ◽  
Renhao Chu ◽  
Xingbo Fan ◽  
Dongming Zhu ◽  
Zhongtao Shi ◽  
...  
Keyword(s):  
Continuous Variable ◽  
Nonlinear Processes ◽  
Optical Superlattice

scholarly journals ENTANGLEMENT SHARING: FROM QUBITS TO GAUSSIAN STATES

2006 ◽  
Vol 04 (03) ◽  
pp. 383-393 ◽  
Author(s):  
GERARDO ADESSO ◽  
FABRIZIO ILLUMINATI
Keyword(s):  
Information Theory ◽  
Quantum Information ◽  
Quantum Correlations ◽  
Quantum Information Theory ◽  
Continuous Variable ◽  
Quantum Systems ◽  
Tripartite Entanglement ◽  
Gaussian States ◽  
Trade Off ◽  
Entanglement Sharing

It is a central trait of quantum information theory that there exist limitations to the free sharing of quantum correlations among multiple parties. Such monogamy constraints have been introduced in a landmark paper by Coffman, Kundu and Wootters, who derived a quantitative inequality expressing a trade-off between the couplewise and the genuine tripartite entanglement for states of three qubits. Since then, a lot of efforts have been devoted to the investigation of distributed entanglement in multipartite quantum systems. In this paper we report, in a unifying framework, a bird's eye view of the most relevant results that have been established so far on entanglement sharing in quantum systems. We will take off from the domain of N qubits, graze qudits, and finally land in the almost unexplored territory of multimode Gaussian states of continuous variable systems.

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