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We show that a graphene pnp junction with a central superconducting electrodeacts as a Veselago lens for incoming electrons by focusing them and theirphase-conjugated counterpart (holes) into different points of the optical axis.This selective focusing suggested by a simple trajectory analysis is confirmedby fully microscopic calculations. Although the focusing pattern is degraded bydeviations from the ideal conditions we show that it remains visible for a widerange of parameters. We discuss how this property can be useful for thedetection of entangled electron pairs.

Selective focusing of electrons and holes in a graphene-based superconducting lens