What question did this study set out to answer?

This research aims to investigate wave function collapse as an explaining-away penalty using weak measurements.

April 11, 20260 citationsOpen Access

Wave Function Collapse as Explaining-Away Penalty: Weak Measurement Sweep on IBM Quantum Hardware

Key Points

This research aims to investigate wave function collapse as an explaining-away penalty using weak measurements.
Conducted a weak measurement sweep from 0.0 to 1.0 in 11 steps on the IBM Fez quantum processor.
Measured penalty increase in response to varied measurement strengths.
Analyzed data with statistical methods including Spearman correlation.
Confirmed a monotonically increasing penalty from near zero to a peak of 0.125 bits at full collapse.
Achieved a correlation coefficient of 0.973, indicating strong relationship between measurement strength and penalty.
All kill conditions were met, validating the experimental setup.

Abstract

Test 7 weak measurement sweep on IBM Fez (156-qubit Heron processor) confirms wave function collapse as the explaining-away penalty at maximum measurement strength. Measurement strength swept 0.0 to 1.0 in 11 steps: penalty increases monotonically (Spearman rho=0.973, p=5.1e-7), from approximately zero at no measurement to peak 0.125 bits at full collapse, with exact decomposition holding throughout. All 4/4 kill conditions PASS. Connects the AI safety engagement-transparency tradeoff to the quantum measurement-collapse tradeoff, providing the sixth substrate confirmation of the Fantasia Bound explaining-away penalty.

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