부산대학교 도서관

We explore a scheme for entanglement generation and optimization in giant atoms by coupling them to finite one-dimensional arrays of spins that behave as cavities. We find that high values for the concurrence can be achieved in small-sized cavities, being the generation time very short. When exciting the system by external means, optimal concurrence is obtained for very weak drivings. We also analyze the effect of disorder in these systems, showing that although the average concurrence decreases with disorder, high concurrences can still be obtained even in scenarios presenting strong disorder. This result leads us to propose an optimization procedure in which by engineering the on-site energies or hoppings in the cavity, concurrences close to 1 can be reached within an extremely short period of time.