Group-covariant extreme and quasiextreme channels
Constructing all extreme instances of the set of completely positive trace-preserving (CPTP) maps, i.e., quantum channels, is a challenging and valuable open problem in quantum information theory. Here we introduce a systematic approach that, despite the lack of knowledge about the full parametrizat...
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| Hauptverfasser: | , |
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| Format: | Artigo |
| Sprache: | Inglês |
| Veröffentlicht: |
American Physical Society
2022-09-01
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| Schriftenreihe: | Physical Review Research |
| Online-Zugang: | http://doi.org/10.1103/PhysRevResearch.4.033206 |
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