Promoting quantum correlations in deterministic quantum computation with a one-qubit model via postselection

The deterministic quantum computation with one qubit (DQC1) model is a restricted of computing able to calculate efficiently the normalized trace unitary matrix. In this work we analyse correlations named entanglement, Bell's nonlocality, discord, and coherence generated by DQC1 circuit considering only two qubits (auxiliary control). For standard discord appear. By introducing filter in purify auxiliary taking it out from totally mixed state consequently promoting other between qubits, such as entanglement nonlocality. Through optimization purification process conclude that even small enough generate We obtain, average, applying repeatedly twelve times becomes 99% pure. situation, almost maximally entangled states are achieved, which its turn, violate inequality. This result suggests simple modification can be promoted universal computing.