论文标题
北极星bose-Einstein冷凝水中的最佳温度估计
Optimal temperature estimation in polariton Bose-Einstein Condensate
论文作者
论文摘要
提高温度的测量精度非常重要且具有挑战性，尤其是在低温范围内。基于北极星热化过程中不变子空间的存在，我们提出了一种提高低温测量精度的新方法，并获得Landau绑定，以避免随着温度接近零，温度的测量不确定性差异。低温的测量精度随极化状态的数量显着增加。为了抵抗耗散，对于获取以稳态编码的温度信息，不连贯的抽水是必要的。应当指出的是，由于温度的量子渔民信息变得越来越少，因此浪费太强是浪费的。
Improving the measurement precision of temperature is very important and challenging, especially in the low temperature range. Based on the existence of invariant subspaces during the polariton thermalization, we propose a new way to enhance the measurement precision of the low temperature and obtain Landau bound to avoid that the measurement uncertainty of the temperature diverges as the temperature approaches zero. The measurement precision of the low temperature increases significantly with the number of polariton states. In order to resist the dissipation, the incoherent pumping is necessary for obtaining the information of the temperature encoded in the steady state. It should be noted that too strong incoherent pumping is wasteful due to that the quantum Fisher information of the temperature becomes less and less dependent on the total number of the polaritons.
