Experimental linear-optical implementation of a multifunctional optimal qubit cloner
Experimental linear-optical implementation of a multifunctional optimal qubit cloner
We present the first experimental implementation of a multifunctional device for the optimal cloning of one to two qubits. Previous implementations have always been designed to optimize the cloning procedure with respect to one single type of a priori information about the cloned state. In contrast, our ``all-in-one'' implementation is …