A quantum processor is a device with a data register and a program register. The input to the program register determines the operation, which is a completely positive linear map, that will be performed on the state in the data register. We develop a mathematical description for these devices. We generalize the concept of quantum programmable processors and we propose programmable measurement devices.
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We dedicate this paper to Anton Zeilinger on the occasion of his 60th birthday.
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Bužek, V., Hillery, M., Ziman, M. et al. Programmable Quantum Processors. Quantum Inf Process 5, 313–420 (2006). https://doi.org/10.1007/s11128-006-0028-z
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DOI: https://doi.org/10.1007/s11128-006-0028-z