论文标题
多部分纠缠检测基于一般状态依赖性的熵不确定性关系多个测量
Multipartite entanglement detection based on generalized state-dependent entropic uncertainty relation for multiple measurements
论文作者
论文摘要
我们介绍了多个测量设置中的广义依赖性熵不确定性关系，并且通过考虑不同的测量序列获得了最佳下限。然后，我们将这种不确定性关系应用于见证人的纠缠，并在两分和三方纠缠的实验上可访问的下限。这种检测纠缠的方法应用于一维晶格和GHz-Werner状态上两个颗粒的物理系统。结果表明，对于不在互无偏基碱基中的测量值，这种新的熵不确定性关系优于先前与状态独立的纠缠检测。此外，我们进行了一项在线实验，以检测GHz的多部分纠缠状态在Quafu Cloud量子计算平台上最多10 QUAT。我们的结果可能在实验检测多部分纠缠中起重要作用。
We present the generalized state-dependent entropic uncertainty relations in multiple measurements setting, and the optimal lower bound is obtained by considering different measurement sequences. We then apply this uncertainty relation to witness entanglement, and give the experimentally accessible lower bounds on both bipartite and tripartite entanglements. This method of detecting entanglement is applied to a physical system of two particles on a one-dimensional lattice, and GHZ-Werner state. It is shown that, for measurements that are not in mutually unbiased bases, this new entropic uncertainty relation is superior to the previous state-independent one in entanglement detection. Furthermore, we conduct an online experiment to detect multipartite entanglement of GHZ states up to 10 qubits on Quafu cloud quantum computation platform. Our results might play important roles in detecting multipartite entanglement experimentally.
