Suppression of spin projection noise in broadband atomic magnetometry
JM Geremia, JK Stockton, H Mabuchi - Physical review letters, 2005 - APS
JM Geremia, JK Stockton, H Mabuchi
Physical review letters, 2005•APSWe demonstrate that quantum nondemolition measurement, combined with a suitable
parameter estimation procedure, can improve the sensitivity of a broadband atomic
magnetometer by reducing uncertainty due to spin projection noise. Furthermore, we
provide evidence that real-time quantum feedback control offers robustness to classical
uncertainties, including shot-to-shot atom number fluctuations, that would otherwise prevent
quantum-limited performance.
parameter estimation procedure, can improve the sensitivity of a broadband atomic
magnetometer by reducing uncertainty due to spin projection noise. Furthermore, we
provide evidence that real-time quantum feedback control offers robustness to classical
uncertainties, including shot-to-shot atom number fluctuations, that would otherwise prevent
quantum-limited performance.
We demonstrate that quantum nondemolition measurement, combined with a suitable parameter estimation procedure, can improve the sensitivity of a broadband atomic magnetometer by reducing uncertainty due to spin projection noise. Furthermore, we provide evidence that real-time quantum feedback control offers robustness to classical uncertainties, including shot-to-shot atom number fluctuations, that would otherwise prevent quantum-limited performance.
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