# Optimal Perfect Distinguishability between Unitaries and Quantum Operations

@article{Lu2010OptimalPD, title={Optimal Perfect Distinguishability between Unitaries and Quantum Operations}, author={Cheng Lu and J. Chen and R. Duan}, journal={arXiv: Quantum Physics}, year={2010} }

We study optimal perfect distinguishability between a unitary and a general quantum operation. In 2-dimensional case we provide a simple sufficient and necessary condition for sequential perfect distinguishability and an analytical formula of optimal query time. We extend the sequential condition to general d-dimensional case. Meanwhile, we provide an upper bound and a lower bound for optimal sequential query time. In the process a new iterative method is given, the most notable innovation of… Expand

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