The Polarization of the Coupling Strength of Interdependent Networks Stimulates Cooperation

Abstract

We introduce a mixed network coupling mechanism and study its effects on how cooperation evolves in interdependent networks. This mechanism allows some players (conservative-driven) to establish a fixed-strength coupling, while other players (radical-driven) adjust their coupling strength through the evolution of strategy. By means of numerical simulation, a hump-like relationship between the level of cooperation and conservative participant density is revealed. Interestingly, interspecies interactions stimulate polarization of the coupling strength of radical-driven players, promoting cooperation between two types of players. We thus demonstrate that a simple mixed network coupling mechanism substantially expands the scope of cooperation among structured populations.

Heat transfer in transversely coupled qubits: optically controlled thermal modulator with common reservoirs

“…Before the end, we would like to mention that a number of rectifiers have been designed based on two-atom systems [39,43,75,76], but most of them are achieved by connecting two atoms to IHRs. The CHR has been shown to have the advantage of enhancing the steady-state entanglement of the system [58], improving the efficiency of refrigerators [77] and the amplification of transistors [48], etc. Based on two TLAs with CHRs, it is reported that quantum switch can be realized via two coupled superconducting qubits connecting RC oscillators [34], and quantum diode with high rectification can be achieved by the same system connecting RLC oscillators [78].…”

“…It is attracting increasing interest in the potential applications in quantum thermal machines. For example, in reference [81], we use the dark state to block the heat current in a quantum refrigerator; in reference [77], the dark state can double the performance of the refrigerator without any external resources; in reference [48], we use the dark state to design quantum switch and in reference [82], the heat diode is designed by using the property of blocking heat transfer.…”

“…In recent years, various quantum thermal devices based on versatile systems have been proposed such as quantum engine and refrigerator [26][27][28][29][30], quantum thermometers [31,32], thermal rectifier [33] and switch [34,35], thermal diode [36][37][38][39] and transistor [40][41][42][43][44][45][46][47][48] and so on. Experimental advances have also been made continuously [20,29,[49][50][51][52][53][54][55], thermodynamic devices at the quantum level using superconducting qubits, quantum dots, cavity QED, circuit QED, and other systems have been realized.…”