
Quantum Noise’s Ghost: Unmasking Unitary Contamination in Deep NISQ Circuits
Unitary contamination: the ghost in the NISQ machine. Beyond basic error mitigation, this insidious issue subtly skews results in deep circuits.
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Unitary contamination: the ghost in the NISQ machine. Beyond basic error mitigation, this insidious issue subtly skews results in deep circuits.

Discarding “orphan qubits”—noisy ones—can eliminate over 90% of phantom quantum noise, revolutionizing calibration and yielding tangible results today.

Stop chasing fault tolerance. Real NISQ value is in **measurement hygiene**, cleaning readouts for actual work today.
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