The measurement problem in liquid NMR quantum computers
Omid Jalili, Mojgan Heidari Adl
TL;DR
This paper discusses the measurement problem in liquid NMR quantum computers, showing that statistical fluctuations cause measured signals to be comparable to noise over time, and suggests short measurement durations to improve signal detection.
Contribution
It applies quantum state diffusion measurement theory to liquid NMR quantum computers, highlighting the impact of fluctuations and proposing a practical measurement strategy.
Findings
Measured magnetic moment becomes noise-like over long times
Shortening measurement time improves signal-to-noise ratio
Quantum state diffusion theory explains measurement fluctuations
Abstract
With the quantum state diffusion measurement theory(QSD), the measurement problem in liquid nuclear magnetic resonance(NMR) quantum computers was addressed and then it was shown that due to statistical fluctuations, the measured magnetic moment value is comparable to noise for long times. Therefore, we suggested that the measurement time should be short to distinguish signal from noise.
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