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It is well known that obtaining information of the quantum system can be performed by quantum measurements. However, it also brings disturbance to the system and affects the entanglement between… Click to show full abstract
It is well known that obtaining information of the quantum system can be performed by quantum measurements. However, it also brings disturbance to the system and affects the entanglement between arbitrary bipartite systems. Firstly, based on the introduction of the purification system, the measurement process has been modeled as the tripartite systems. Then, the definitions of various information quantities are provided. Finally, we discuss the relationships between information gain and entanglement in the tripartite systems.
Journal Title: Quantum Information Processing
Year Published: 2021
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