Adjusting phase-covariant qubit channel performance with non-unitality
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DOI: 10.1088/1751-8121/acccbf
Abstract: We analyze quantum communication properties of phase-covariant channels depending on their degree of non-unitality. In particular, we derive analytical formulas for the minimal and maximal channel fidelity on pure states and maximal output purity. Next,… read more here.
Keywords: adjusting phase; unitality; phase covariant; non unitality ... See more keywords