Autonomous quantum refrigerator in a circuit QED architecture based on a Josephson junction

作者：Hofer Patrick P; Perarnau Llobet Marti; Brask Jonatan Bohr; Silva Ralph; Huber Marcus; Brunner Nicolas

来源：Physical Review B, 2016, 94(23): 235420.

DOI：10.1103/PhysRevB.94.235420

An implementation of a small quantum absorption refrigerator in a circuit QED architecture is proposed. The setup consists of three harmonic oscillators coupled to a Josephson junction. The refrigerator is autonomous in the sense that it does not require any external control for cooling, but only thermal contact between the oscillators and heat baths at different temperatures. In addition, the setup features a built-in switch, which allows the cooling to be turned on and off. If timing control is available, this enables the possibility for coherence-enhanced cooling. Finally, we show that significant cooling can be achieved with experimentally realistic parameters and that our setup should be within reach of current technology.

• 出版日期2016-12-16