Unruh效应对量子存储下熵不确定关系的影响（英文）

The effect of Unruh effect for quantum-memory-assisted entropic uncertainty relation

不确定性关系给出了不相容物理量测量结果准确性的约束,为理解量子理论奠定了基础,且在量子密码术和纠缠验证等方面具有应用价值.研究Unruh效应对量子存储下熵不确定关系的影响.研究结果表明:在较低的加速度下熵的不确定度增加,在较高的加速度下熵的不确定度降低;在一个确定的加速度下,熵的不确定度可达最大值.对上述现象,给出了2种不同的物理解释.

Uncertainty relations provide constraints on how well the outcomes of incompatible measurements can be predicted and fundamental to our understanding of quantum theory.They have practical applications in cryptography and witnessing entanglement.Here,the authors explored how Unruh effect would affect quantum-memory-assisted entropic uncertainty relation（QMA-EUR）for a pair of maximally entangled Unruh-Dewitt detectors when one of them was accelerated and coupled to a massless scalar field.The result showed that while the amount of uncertainty was increased in low accelerations,it was reduced in higher accelerations and had a nontrivial behavior acquiring its maximum value at a certain acceleration.The mechanism of these phenomena were explored by using two dissimilar methods.