We derive exact conditions for when quantum channels render all measurements jointly measurable on qubits, proving PVM and POVM incompatibility-breaking equivalence for unital channels and establishing steering criteria for two-qubit states.
#QuantumMeasurements #QubitChannels #QuantumSteering
#QuantumMeasurements #QubitChannels #QuantumSteering
Exact Incompatibility-Breaking Criterion for Unital Qubit Channels
arxiv.org
July 31, 2026 at 4:08 AM
We derive exact conditions for when quantum channels render all measurements jointly measurable on qubits, proving PVM and POVM incompatibility-breaking equivalence for unital channels and establishing steering criteria for two-qubit states.
#QuantumMeasurements #QubitChannels #QuantumSteering
#QuantumMeasurements #QubitChannels #QuantumSteering