Quantum uncertainty relations of quantum coherence and dynamics under amplitude damping channel

• 来源期刊: 中国物理B（英文版）
• 关键词: quantum uncertainty relation quantum coherence amplitude damping channel single qubit state
• 年，卷（期）: 2018,（9）
• 页码范围: 186-195
• 页数: 10页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/9/090301

摘要

In this paper,we discuss quantum uncertainty relations of quantum coherence through a different method from Ref.[52].Some lower bounds with parameters and their minimal bounds are obtained.Moreover,we find that for two pairs of measurement bases with the same maximum overlap,quantum uncertainty relations and lower bounds with pa-rameters are different,but the minimal bounds are the same.In addition,we discuss the dynamics of quantum uncertainty relations of quantum coherence and their lower bounds under the amplitude damping channel(ADC).We find that the ADC will change the uncertainty relations and their lower bounds,and their tendencies depend on the initial state.