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arXiv · 1401.8128

Implementing quantum control for unknown subroutines

Nicolai Friis·Vedran Dunjko·Wolfgang Dür·Hans J. Briegel
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Abstract

We present setups for the practical realization of adding control to unknown subroutines, supplementing the existing quantum optical scheme for black-box control with a counterpart for the quantum control of the ordering of sequences of operations. We also provide schemes to realize either task using trapped ions. These practical circumventions of recent no-go theorems are based on existing technologies. We argue that the possibility to add control to unknown operations in practice is a common feature of many physical systems. Based on the proposed implementations we discuss the apparent contradictions between theory and practice.

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Nicolai Friis, Vedran Dunjko, Wolfgang Dür, Hans J. Briegel. 2014-03-13. Implementing quantum control for unknown subroutines. https://doi.org/10.1103/physreva.89.030303

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