Quantifying channels output similarity with applications to quantum control |
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Authors: | Łukasz Pawela Zbigniew Puchała |
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Affiliation: | 1.Institute of Theoretical and Applied Informatics,Polish Academy of Sciences,Gliwice,Poland;2.Institute of Physics,Jagiellonian University,Kraków,Poland |
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Abstract: | In this work, we aim at quantifying quantum channel output similarity. In order to achieve this, we introduce the notion of quantum channel superfidelity, which gives us an upper bound on the quantum channel fidelity. This quantity is expressed in a clear form using the Kraus representation of a quantum channel. As examples, we show potential applications of this quantity in the quantum control field. |
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