Speeding up a quantum refrigerator via counterdiabatic driving
Speeding up a quantum refrigerator via counterdiabatic driving
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DOI：
10.1103/physrevb.100.035407
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发表时间：
2019-05
影响因子：
3.7
通讯作者：
K. Funo;Neill Lambert;B. Karimi;J. Pekola;Y. Masuyama;F. Nori
中科院分区：
文献类型：
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作者：
K. Funo;Neill Lambert;B. Karimi;J. Pekola;Y. Masuyama;F. Nori
我们研究了应用反绝热驱动（CD）技术来提高基于超导量子比特耦合到两个谐振电路的量子奥托制冷机的热力学效率和功率。虽然CD技术最初是为了抵消孤立系统中的非绝热相干激发，但我们发现它在开放系统动力学中也有效地工作，提高了相干引起的效率和功率损失。我们比较了CD动力学与其经典的对应，并找到一个偏差，因为CD的目的是遵循原来的哈密顿能量本征基，但热浴热化系统在不同的基础上。我们还讨论了我们的模型可能的实验实现。
We study the application of a counterdiabatic driving (CD) technique to enhance the thermodynamic efficiency and power of a quantum Otto refrigerator based on a superconducting qubit coupled to two resonant circuits. Although the CD technique is originally designed to counteract nonadiabatic coherent excitations in isolated systems, we find that it also works effectively in the open system dynamics, improving the coherence-induced losses of efficiency and power. We compare the CD dynamics with its classical counterpart, and find a deviation that arises because the CD is designed to follow the energy eigenbasis of the original Hamiltonian, but the heat baths thermalize the system in a different basis. We also discuss possible experimental realizations of our model.