论文标题
直接检测Qubit Pure Dephasing期间产生的量子环境纠缠的方案
A scheme for direct detection of qubit-environment entanglement generated during qubit pure dephasing
论文作者
论文摘要
我们提出了一个在时间$τ$上检测量子环境纠缠的方案，该方案仅需要在量子方面进行操作和测量，这都是当前实验性最新的最新范围。该方案适用于任何类型的交互作用，只要初始量子态纯净，就会导致量子量的纯态。当量子态在环境方面是中性的，例如，当环境最常见的情况下，当环境最初处于热平衡状态时，这一点变得特别简单。
We propose a scheme for the detection of qubit-environment entanglement at time $τ$ which requires only operations and measurements on the qubit, all within reach of current experimental state-of-the-art. The scheme works for any type of interaction which leads to pure dephasing of the qubit as long as the initial qubit state is pure. It becomes particularly simple when one of the qubit states is neutral with respect to the environment, such as in case of the most common choice of the NV center spin qubit or for excitonic charge qubits, when the environment is initially at thermal equilibrium.
