Superradiant Many-Qubit Absorption Refrigerator

We show that the lower levels of a large-spin network with a collective antiferromagnetic interaction and collective couplings to three reservoirs may function as a quantum-absorption refrigerator. In appropriate regimes, the steady-state cooling current of this refrigerator scales quadratically with the size of the working medium, i.e., the number of spins. The same scaling is observed for the noise and the entropy production rate.

Automated summary

In this study, it is demonstrated that the lower levels of a large-spin network can act as a quantum-absorption refrigerator with a cooling current scaling quadratically with the number of spins. This scaling behavior is also observed for noise and entropy production rate.