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Cooper pair splitters are promising candidates for generating spin-entangledelectrons. However, the splitting of Cooper pairs is a random and noisyprocess, which hinders further synchronized operations on the entangledelectrons. To circumvent this problem, we here propose and analyze a dynamicCooper pair splitter that produces a noiseless and regular flow ofspin-entangled electrons. The Cooper pair splitter is based on a superconductorcoupled to quantum dots, whose energy levels are tuned in and out of resonanceto control the splitting process. We identify the optimal operating conditionsfor which exactly one Cooper pair is split per period of the external drive andthe flow of entangled electrons becomes noiseless. To characterize theregularity of the Cooper pair splitter in the time domain, we analyze the$g^{(2)}$-function of the output currents and the distribution of waiting timesbetween split Cooper pairs. Our proposal is feasible using current technology,and it paves the way for dynamic quantum information processing withspin-entangled electrons.

Dynamic Cooper Pair Splitter