论文标题
量子热力学用于量子冰箱冷却量子
Quantum Thermodynamics applied for Quantum Refrigerators cooling down a qubit
论文作者
论文摘要
我们讨论了量子冰箱，以增加目标量子置量的基态概率，该目标量子位的基态能量差异小于环境的热能。我们考虑两种类型的量子冰箱：（1）一个具有频繁脉冲操作的额外量子，以及（2）没有它们的两个额外量子。从量子热力学的角度评估了这两种类型的冰箱。更具体地说，我们计算从目标零件中去除的热量，为系统完成的工作以及性能系数（COP），加热蚂蚁之间的比率。我们表明，第二种类型的COP优于第一个类型的COP。我们的结果可用于设计高性能量子冰箱来冷却量子。
We discuss a quantum refrigerator to increase the ground state probability of a target qubit whose energy difference between the ground and excited states is less than the thermal energy of the environment. We consider two types of quantum refrigerators: (1) one extra qubit with frequent pulse operations and (2) two extra qubits without them. These two types of refrigerators are evaluated from the viewpoint of quantum thermodynamics. More specifically, we calculate the heat removed from the target qubit, the work done for the system, and the coefficient of performance (COP), the ratio between the heat ant the work. We show that the COP of the second type outperforms that of the first type. Our results are useful to design a high-performance quantum refrigerator cooling down a qubit.
