A new symmetry-based formalism, quantum observables over time, derives observable-specific recovery maps that can reach optimal sampling overhead in quantum error mitigation.
Relations Between Quantum Maps and Quantum States
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abstract
The relation between completely positive maps and compound states is investigated in terms of the notion of quantum conditional probability.
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Quantum observables over time for information recovery
A new symmetry-based formalism, quantum observables over time, derives observable-specific recovery maps that can reach optimal sampling overhead in quantum error mitigation.